diff --git a/.agents/skills/review-architecture/SKILL.md b/.agents/skills/review-architecture/SKILL.md
index 923c36da5a..df2ff85755 100644
--- a/.agents/skills/review-architecture/SKILL.md
+++ b/.agents/skills/review-architecture/SKILL.md
@@ -24,6 +24,7 @@ Required on every review. Read the remaining pages on demand when the diff touch
 - `wiki/architecture/scene-registry.md`
 - `wiki/architecture/spatial-queries.md`
 - `wiki/architecture/node-schemas.md`
+- `wiki/architecture/inspector-field-limits.md` — no arbitrary `min`/`max` on dimension fields. Read whenever the diff adds or edits `parametrics.ts`, a kind `panel.tsx`, or `<SliderControl>` bounds.
 - `wiki/architecture/events.md`
 - `wiki/architecture/interaction-scope.md` — the interaction state machine + the unified snapping/modifier convention. Read whenever the diff touches a tool, a `move-tool` / `selection` / endpoint / reshape file, `lib/interaction/**`, `lib/snapping-mode.ts`, or `use-interaction-scope`.
 
diff --git a/packages/editor/src/components/ui/panels/multi-parametric-inspector.tsx b/packages/editor/src/components/ui/panels/multi-parametric-inspector.tsx
index 2a509b7e4d..7246aab6f4 100644
--- a/packages/editor/src/components/ui/panels/multi-parametric-inspector.tsx
+++ b/packages/editor/src/components/ui/panels/multi-parametric-inspector.tsx
@@ -240,8 +240,6 @@ function MultiVec3Field({
           <SliderControl
             key={`${fieldKey}-${label}`}
             label={label}
-            max={axisValue + 5}
-            min={axisValue - 5}
             mixed={mixed}
             onChange={(next) => previewMultiNodeFields(patchAxis(next))}
             onCommit={(next) => {
diff --git a/packages/editor/src/components/ui/panels/parametric-field-control.tsx b/packages/editor/src/components/ui/panels/parametric-field-control.tsx
index 995b0ee804..4defaeeccf 100644
--- a/packages/editor/src/components/ui/panels/parametric-field-control.tsx
+++ b/packages/editor/src/components/ui/panels/parametric-field-control.tsx
@@ -152,8 +152,6 @@ export function ParametricFieldControl({
               <SliderControl
                 key={`${key}-${label}`}
                 label={label}
-                max={axisValue + 5}
-                min={axisValue - 5}
                 mixed={mixed}
                 onChange={(next) => onChange(apply(next))}
                 onCommit={onCommit ? (next) => onCommit(apply(next)) : undefined}
diff --git a/packages/nodes/src/block/panel.tsx b/packages/nodes/src/block/panel.tsx
index 2f9438f341..0e0de80149 100644
--- a/packages/nodes/src/block/panel.tsx
+++ b/packages/nodes/src/block/panel.tsx
@@ -277,8 +277,6 @@ export default function BlockPanel() {
           <SliderControl
             key={label}
             label={label}
-            max={node.position[axis] + 2}
-            min={node.position[axis] - 2}
             onChange={onChange}
             precision={2}
             step={0.01}
diff --git a/packages/nodes/src/box-vent/panel.tsx b/packages/nodes/src/box-vent/panel.tsx
index 1d89804e30..537496152f 100644
--- a/packages/nodes/src/box-vent/panel.tsx
+++ b/packages/nodes/src/box-vent/panel.tsx
@@ -185,7 +185,7 @@ export default function BoxVentPanel() {
       <PanelSection title="Dimensions">
         <SliderControl
           label="Width"
-          max={0.8}
+          max={1000}
           min={0.15}
           onChange={(v) => previewProp({ width: v })}
           onCommit={(v) => handleUpdate({ width: v })}
@@ -197,7 +197,7 @@ export default function BoxVentPanel() {
         />
         <SliderControl
           label="Depth"
-          max={0.8}
+          max={1000}
           min={0.15}
           onChange={(v) => previewProp({ depth: v })}
           onCommit={(v) => handleUpdate({ depth: v })}
@@ -209,7 +209,7 @@ export default function BoxVentPanel() {
         />
         <SliderControl
           label="Height"
-          max={0.4}
+          max={1000}
           min={0.05}
           onChange={(v) => previewProp({ height: v })}
           onCommit={(v) => handleUpdate({ height: v })}
diff --git a/packages/nodes/src/box-vent/parametrics.ts b/packages/nodes/src/box-vent/parametrics.ts
index 95e5d1d206..b9d1d16563 100644
--- a/packages/nodes/src/box-vent/parametrics.ts
+++ b/packages/nodes/src/box-vent/parametrics.ts
@@ -28,9 +28,9 @@ export const boxVentParametrics: ParametricDescriptor<BoxVentNode> = {
     {
       label: 'Dimensions',
       fields: [
-        { key: 'width', kind: 'number', unit: 'm', min: 0.15, max: 0.8, step: 0.01 },
-        { key: 'depth', kind: 'number', unit: 'm', min: 0.15, max: 0.8, step: 0.01 },
-        { key: 'height', kind: 'number', unit: 'm', min: 0.05, max: 0.4, step: 0.01 },
+        { key: 'width', kind: 'number', unit: 'm', min: 0.15, max: 1000, step: 0.01 },
+        { key: 'depth', kind: 'number', unit: 'm', min: 0.15, max: 1000, step: 0.01 },
+        { key: 'height', kind: 'number', unit: 'm', min: 0.05, max: 1000, step: 0.01 },
         { key: 'hoodOverhang', kind: 'number', unit: 'm', min: 0, max: 0.12, step: 0.005 },
       ],
     },
diff --git a/packages/nodes/src/ceiling/panel.tsx b/packages/nodes/src/ceiling/panel.tsx
index c3cb2cb809..1f8772954d 100644
--- a/packages/nodes/src/ceiling/panel.tsx
+++ b/packages/nodes/src/ceiling/panel.tsx
@@ -260,7 +260,7 @@ export function CeilingPanel() {
         ) : (
           <SliderControl
             label="Height"
-            max={Math.min(20, maxHeight)}
+            max={Math.min(1000, maxHeight)}
             min={0}
             onChange={handleHeightChange}
             precision={3}
diff --git a/packages/nodes/src/ceiling/parametrics.ts b/packages/nodes/src/ceiling/parametrics.ts
index c6fffc6eb6..894e362f81 100644
--- a/packages/nodes/src/ceiling/parametrics.ts
+++ b/packages/nodes/src/ceiling/parametrics.ts
@@ -12,7 +12,7 @@ export const ceilingParametrics: ParametricDescriptor<CeilingNode> = {
   groups: [
     {
       label: 'Dimensions',
-      fields: [{ key: 'height', kind: 'number', unit: 'm', min: 1.5, max: 20, step: 0.05 }],
+      fields: [{ key: 'height', kind: 'number', unit: 'm', min: 0.1, max: 1000, step: 0.05 }],
     },
   ],
   customPanel: () => import('./panel'),
diff --git a/packages/nodes/src/chimney/panel.tsx b/packages/nodes/src/chimney/panel.tsx
index bb8dc31062..d706dbd5e8 100644
--- a/packages/nodes/src/chimney/panel.tsx
+++ b/packages/nodes/src/chimney/panel.tsx
@@ -369,7 +369,7 @@ export default function ChimneyPanel() {
         />
         <SliderControl
           label={(node.bodyShape ?? 'square') === 'round' ? 'Diameter' : 'Width'}
-          max={3}
+          max={1000}
           min={0.2}
           onChange={(v) => previewProp({ width: v })}
           onCommit={(v) => commitProp({ width: v })}
@@ -382,7 +382,7 @@ export default function ChimneyPanel() {
         {(node.bodyShape ?? 'square') !== 'round' && (
           <SliderControl
             label="Depth"
-            max={3}
+            max={1000}
             min={0.2}
             onChange={(v) => previewProp({ depth: v })}
             onCommit={(v) => commitProp({ depth: v })}
@@ -436,7 +436,7 @@ export default function ChimneyPanel() {
       <PanelSection title="Height">
         <SliderControl
           label="Above Ridge"
-          max={5}
+          max={1000}
           min={0.1}
           onChange={(v) => previewProp({ heightAboveRidge: v })}
           onCommit={(v) => commitProp({ heightAboveRidge: v })}
diff --git a/packages/nodes/src/chimney/parametrics.ts b/packages/nodes/src/chimney/parametrics.ts
index acd5acdc19..fafe128386 100644
--- a/packages/nodes/src/chimney/parametrics.ts
+++ b/packages/nodes/src/chimney/parametrics.ts
@@ -18,17 +18,17 @@ export const chimneyParametrics: ParametricDescriptor<ChimneyNode> = {
           options: ['square', 'round'],
           display: 'segmented',
         },
-        { key: 'width', kind: 'number', unit: 'm', min: 0.2, max: 2, step: 0.05 },
+        { key: 'width', kind: 'number', unit: 'm', min: 0.2, max: 1000, step: 0.05 },
         {
           key: 'depth',
           kind: 'number',
           unit: 'm',
           min: 0.2,
-          max: 2,
+          max: 1000,
           step: 0.05,
           visibleIf: (n) => n.bodyShape === 'square',
         },
-        { key: 'heightAboveRidge', kind: 'number', unit: 'm', min: 0.2, max: 3, step: 0.05 },
+        { key: 'heightAboveRidge', kind: 'number', unit: 'm', min: 0.2, max: 1000, step: 0.05 },
         {
           key: 'cornerBevel',
           kind: 'number',
diff --git a/packages/nodes/src/column/panel.tsx b/packages/nodes/src/column/panel.tsx
index 4bcf674266..519c5474b6 100644
--- a/packages/nodes/src/column/panel.tsx
+++ b/packages/nodes/src/column/panel.tsx
@@ -585,7 +585,7 @@ export default function ColumnPanel() {
         {!managedByLeanTo && (
           <SliderControl
             label="Height"
-            max={20}
+            max={1000}
             min={0.8}
             onChange={(value) => handleUpdate({ height: value })}
             precision={2}
@@ -606,7 +606,7 @@ export default function ColumnPanel() {
               supportStyle === 'box-frame') && (
               <SliderControl
                 label="Bottom Spread"
-                max={4}
+                max={1000}
                 min={0.2}
                 onChange={(value) =>
                   handleUpdate({
@@ -667,7 +667,7 @@ export default function ColumnPanel() {
           <>
             <SliderControl
               label="Width"
-              max={1.6}
+              max={1000}
               min={0.12}
               onChange={(value) =>
                 handleUpdate({
@@ -684,7 +684,7 @@ export default function ColumnPanel() {
             {node.crossSection === 'rectangular' && (
               <SliderControl
                 label="Depth"
-                max={1.6}
+                max={1000}
                 min={0.12}
                 onChange={(value) => handleUpdate({ depth: value })}
                 precision={2}
diff --git a/packages/nodes/src/column/parametrics.ts b/packages/nodes/src/column/parametrics.ts
index 340c58f6f9..8b9622bd8b 100644
--- a/packages/nodes/src/column/parametrics.ts
+++ b/packages/nodes/src/column/parametrics.ts
@@ -14,9 +14,9 @@ export const columnParametrics: ParametricDescriptor<ColumnNode> = {
     {
       label: 'Dimensions',
       fields: [
-        { key: 'height', kind: 'number', unit: 'm', min: 0.5, max: 20, step: 0.05 },
-        { key: 'width', kind: 'number', unit: 'm', min: 0.1, max: 2, step: 0.01 },
-        { key: 'depth', kind: 'number', unit: 'm', min: 0.1, max: 2, step: 0.01 },
+        { key: 'height', kind: 'number', unit: 'm', min: 0.5, max: 1000, step: 0.05 },
+        { key: 'width', kind: 'number', unit: 'm', min: 0.1, max: 1000, step: 0.01 },
+        { key: 'depth', kind: 'number', unit: 'm', min: 0.1, max: 1000, step: 0.01 },
       ],
     },
   ],
diff --git a/packages/nodes/src/cupola/panel.tsx b/packages/nodes/src/cupola/panel.tsx
index ec6f68af0d..2d5913a341 100644
--- a/packages/nodes/src/cupola/panel.tsx
+++ b/packages/nodes/src/cupola/panel.tsx
@@ -165,7 +165,7 @@ export default function CupolaPanel() {
       <PanelSection title="Dimensions">
         <SliderControl
           label="Width"
-          max={2}
+          max={1000}
           min={0.3}
           onChange={(v) => previewProp({ width: v })}
           onCommit={(v) => handleUpdate({ width: v })}
@@ -177,7 +177,7 @@ export default function CupolaPanel() {
         />
         <SliderControl
           label="Depth"
-          max={2}
+          max={1000}
           min={0.3}
           onChange={(v) => previewProp({ depth: v })}
           onCommit={(v) => handleUpdate({ depth: v })}
@@ -189,7 +189,7 @@ export default function CupolaPanel() {
         />
         <SliderControl
           label="Height"
-          max={2.5}
+          max={1000}
           min={0.4}
           onChange={(v) => previewProp({ height: v })}
           onCommit={(v) => handleUpdate({ height: v })}
diff --git a/packages/nodes/src/cupola/parametrics.ts b/packages/nodes/src/cupola/parametrics.ts
index 7ea4cf9fe3..238ad3a275 100644
--- a/packages/nodes/src/cupola/parametrics.ts
+++ b/packages/nodes/src/cupola/parametrics.ts
@@ -24,9 +24,9 @@ export const cupolaParametrics: ParametricDescriptor<CupolaNode> = {
     {
       label: 'Dimensions',
       fields: [
-        { key: 'width', kind: 'number', unit: 'm', min: 0.3, max: 2, step: 0.05 },
-        { key: 'depth', kind: 'number', unit: 'm', min: 0.3, max: 2, step: 0.05 },
-        { key: 'height', kind: 'number', unit: 'm', min: 0.4, max: 2.5, step: 0.05 },
+        { key: 'width', kind: 'number', unit: 'm', min: 0.3, max: 1000, step: 0.05 },
+        { key: 'depth', kind: 'number', unit: 'm', min: 0.3, max: 1000, step: 0.05 },
+        { key: 'height', kind: 'number', unit: 'm', min: 0.4, max: 1000, step: 0.05 },
       ],
     },
   ],
diff --git a/packages/nodes/src/door/panel.tsx b/packages/nodes/src/door/panel.tsx
index 984230231d..12608e108b 100644
--- a/packages/nodes/src/door/panel.tsx
+++ b/packages/nodes/src/door/panel.tsx
@@ -731,7 +731,7 @@ export default function DoorPanel() {
         />
         <SliderControl
           label="Height"
-          max={4}
+          max={1000}
           min={1.0}
           onChange={(v) =>
             handleUpdate({
diff --git a/packages/nodes/src/door/parametrics.ts b/packages/nodes/src/door/parametrics.ts
index a924571b45..bdf0bee6ab 100644
--- a/packages/nodes/src/door/parametrics.ts
+++ b/packages/nodes/src/door/parametrics.ts
@@ -14,8 +14,8 @@ export const doorParametrics: ParametricDescriptor<DoorNode> = {
     {
       label: 'Dimensions',
       fields: [
-        { key: 'width', kind: 'number', unit: 'm', min: 0.5, max: 6, step: 0.05 },
-        { key: 'height', kind: 'number', unit: 'm', min: 1.0, max: 4, step: 0.05 },
+        { key: 'width', kind: 'number', unit: 'm', min: 0.5, max: 1000, step: 0.05 },
+        { key: 'height', kind: 'number', unit: 'm', min: 1.0, max: 1000, step: 0.05 },
       ],
     },
     {
diff --git a/packages/nodes/src/dormer/panel.tsx b/packages/nodes/src/dormer/panel.tsx
index dd19c16dfa..219fbcec87 100644
--- a/packages/nodes/src/dormer/panel.tsx
+++ b/packages/nodes/src/dormer/panel.tsx
@@ -202,7 +202,7 @@ export default function DormerPanel() {
           <PanelSection title="Dimensions">
             <SliderControl
               label="Width"
-              max={4}
+              max={1000}
               min={0.5}
               onChange={(v) => previewProp({ width: v })}
               onCommit={(v) => commitProp({ width: v })}
@@ -214,7 +214,7 @@ export default function DormerPanel() {
             />
             <SliderControl
               label="Depth"
-              max={5}
+              max={1000}
               min={0.5}
               onChange={(v) => previewProp({ depth: v })}
               onCommit={(v) => commitProp({ depth: v })}
@@ -226,7 +226,7 @@ export default function DormerPanel() {
             />
             <SliderControl
               label="Wall Height"
-              max={5}
+              max={1000}
               min={0}
               onChange={(v) => previewProp({ height: v })}
               onCommit={(v) => commitProp({ height: v })}
diff --git a/packages/nodes/src/dormer/parametrics.ts b/packages/nodes/src/dormer/parametrics.ts
index d8a46cccf1..f11ee87442 100644
--- a/packages/nodes/src/dormer/parametrics.ts
+++ b/packages/nodes/src/dormer/parametrics.ts
@@ -11,9 +11,9 @@ export const dormerParametrics: ParametricDescriptor<DormerNode> = {
     {
       label: 'Dormer',
       fields: [
-        { key: 'width', kind: 'number', unit: 'm', min: 0.5, max: 4, step: 0.05 },
-        { key: 'depth', kind: 'number', unit: 'm', min: 0.5, max: 5, step: 0.05 },
-        { key: 'height', kind: 'number', unit: 'm', min: 0, max: 5, step: 0.05 },
+        { key: 'width', kind: 'number', unit: 'm', min: 0.5, max: 1000, step: 0.05 },
+        { key: 'depth', kind: 'number', unit: 'm', min: 0.5, max: 1000, step: 0.05 },
+        { key: 'height', kind: 'number', unit: 'm', min: 0, max: 1000, step: 0.05 },
       ],
     },
     {
@@ -30,7 +30,9 @@ export const dormerParametrics: ParametricDescriptor<DormerNode> = {
     },
     {
       label: 'Hung wall',
-      fields: [{ key: 'wallSkirtHeight', kind: 'number', unit: 'm', min: 0.2, max: 6, step: 0.05 }],
+      fields: [
+        { key: 'wallSkirtHeight', kind: 'number', unit: 'm', min: 0.2, max: 1000, step: 0.05 },
+      ],
     },
     {
       label: 'Window opening',
diff --git a/packages/nodes/src/downspout/parametrics.ts b/packages/nodes/src/downspout/parametrics.ts
index b66f1e69cc..2ab301768b 100644
--- a/packages/nodes/src/downspout/parametrics.ts
+++ b/packages/nodes/src/downspout/parametrics.ts
@@ -8,7 +8,7 @@ export const downspoutParametrics: ParametricDescriptor<DownspoutNode> = {
     {
       label: 'Dimensions',
       fields: [
-        { key: 'length', kind: 'number', unit: 'm', min: 0.1, max: 8, step: 0.05 },
+        { key: 'length', kind: 'number', unit: 'm', min: 0.1, max: 1000, step: 0.05 },
         { key: 'diameter', kind: 'number', unit: 'm', min: 0.02, max: 0.15, step: 0.005 },
         // Cross-section: follow the gutter profile, or force round / rect.
         {
diff --git a/packages/nodes/src/duct-terminal/parametrics.ts b/packages/nodes/src/duct-terminal/parametrics.ts
index 88a02c1e50..4df7760ef7 100644
--- a/packages/nodes/src/duct-terminal/parametrics.ts
+++ b/packages/nodes/src/duct-terminal/parametrics.ts
@@ -22,8 +22,8 @@ export const ductTerminalParametrics: ParametricDescriptor<DuctTerminalNode> = {
     {
       label: 'Face',
       fields: [
-        { key: 'width', kind: 'number', unit: 'm', min: 0.1, max: 1.5, step: 0.05 },
-        { key: 'depth', kind: 'number', unit: 'm', min: 0.05, max: 1.5, step: 0.05 },
+        { key: 'width', kind: 'number', unit: 'm', min: 0.1, max: 1000, step: 0.05 },
+        { key: 'depth', kind: 'number', unit: 'm', min: 0.05, max: 1000, step: 0.05 },
       ],
     },
     {
diff --git a/packages/nodes/src/elevator/panel.tsx b/packages/nodes/src/elevator/panel.tsx
index 09ac7cc9ce..f716e1b3c9 100644
--- a/packages/nodes/src/elevator/panel.tsx
+++ b/packages/nodes/src/elevator/panel.tsx
@@ -496,8 +496,6 @@ export default function ElevatorPanel() {
       <PanelSection title="Position">
         <SliderControl
           label="X"
-          max={50}
-          min={-50}
           onChange={(value) => {
             const position = getSupportedPosition(value, displayPosition[2])
             previewTransform(position, displayRotation)
@@ -514,8 +512,6 @@ export default function ElevatorPanel() {
         />
         <SliderControl
           label="Y"
-          max={50}
-          min={-50}
           onChange={(value) => {
             const position: ElevatorNode['position'] = [
               displayPosition[0],
@@ -540,8 +536,6 @@ export default function ElevatorPanel() {
         />
         <SliderControl
           label="Z"
-          max={50}
-          min={-50}
           onChange={(value) => {
             const position = getSupportedPosition(displayPosition[0], value)
             previewTransform(position, displayRotation)
diff --git a/packages/nodes/src/eyebrow-vent/panel.tsx b/packages/nodes/src/eyebrow-vent/panel.tsx
index 44934767dc..5ced7043e8 100644
--- a/packages/nodes/src/eyebrow-vent/panel.tsx
+++ b/packages/nodes/src/eyebrow-vent/panel.tsx
@@ -184,7 +184,7 @@ export default function EyebrowVentPanel() {
       <PanelSection title="Dimensions">
         <SliderControl
           label="Width"
-          max={3}
+          max={1000}
           min={0.4}
           onChange={(v) => previewProp({ width: v })}
           onCommit={(v) => handleUpdate({ width: v })}
@@ -196,7 +196,7 @@ export default function EyebrowVentPanel() {
         />
         <SliderControl
           label="Depth"
-          max={1.5}
+          max={1000}
           min={0.2}
           onChange={(v) => previewProp({ depth: v })}
           onCommit={(v) => handleUpdate({ depth: v })}
@@ -208,7 +208,7 @@ export default function EyebrowVentPanel() {
         />
         <SliderControl
           label="Height"
-          max={1}
+          max={1000}
           min={0.08}
           onChange={(v) => previewProp({ height: v })}
           onCommit={(v) => handleUpdate({ height: v })}
diff --git a/packages/nodes/src/eyebrow-vent/parametrics.ts b/packages/nodes/src/eyebrow-vent/parametrics.ts
index 02fa2fe0ca..041e421fc1 100644
--- a/packages/nodes/src/eyebrow-vent/parametrics.ts
+++ b/packages/nodes/src/eyebrow-vent/parametrics.ts
@@ -25,9 +25,9 @@ export const eyebrowVentParametrics: ParametricDescriptor<EyebrowVentNode> = {
     {
       label: 'Dimensions',
       fields: [
-        { key: 'width', kind: 'number', unit: 'm', min: 0.3, max: 2, step: 0.05 },
-        { key: 'depth', kind: 'number', unit: 'm', min: 0.2, max: 1.5, step: 0.05 },
-        { key: 'height', kind: 'number', unit: 'm', min: 0.08, max: 1, step: 0.02 },
+        { key: 'width', kind: 'number', unit: 'm', min: 0.3, max: 1000, step: 0.05 },
+        { key: 'depth', kind: 'number', unit: 'm', min: 0.2, max: 1000, step: 0.05 },
+        { key: 'height', kind: 'number', unit: 'm', min: 0.08, max: 1000, step: 0.02 },
       ],
     },
   ],
diff --git a/packages/nodes/src/fence/parametrics.ts b/packages/nodes/src/fence/parametrics.ts
index 8d5f67a308..c26f529d83 100644
--- a/packages/nodes/src/fence/parametrics.ts
+++ b/packages/nodes/src/fence/parametrics.ts
@@ -51,8 +51,8 @@ export const fenceParametrics: ParametricDescriptor<FenceNode> = {
           component: FenceCurveEditor,
           visibleIf: (n) => !isSplineFence(n),
         },
-        { key: 'height', kind: 'number', unit: 'm', min: 0.4, max: 4, step: 0.05 },
-        { key: 'thickness', kind: 'number', unit: 'm', min: 0.03, max: 0.5, step: 0.005 },
+        { key: 'height', kind: 'number', unit: 'm', min: 0.4, max: 1000, step: 0.05 },
+        { key: 'thickness', kind: 'number', unit: 'm', min: 0.03, max: 1000, step: 0.005 },
       ],
     },
     {
@@ -60,7 +60,7 @@ export const fenceParametrics: ParametricDescriptor<FenceNode> = {
       fields: [
         { key: 'baseHeight', kind: 'number', unit: 'm', min: 0.04, max: 1, step: 0.01 },
         { key: 'topRailHeight', kind: 'number', unit: 'm', min: 0.01, max: 0.25, step: 0.005 },
-        { key: 'postSpacing', kind: 'number', unit: 'm', min: 0.05, max: 5, step: 0.01 },
+        { key: 'postSpacing', kind: 'number', unit: 'm', min: 0.05, max: 1000, step: 0.01 },
         { key: 'postSize', kind: 'number', unit: 'm', min: 0.01, max: 0.4, step: 0.005 },
         {
           // Dropdown (not segmented) so the inspector renders its "Post Cap"
diff --git a/packages/nodes/src/gutter/parametrics.ts b/packages/nodes/src/gutter/parametrics.ts
index cf1f68b377..622d390ccb 100644
--- a/packages/nodes/src/gutter/parametrics.ts
+++ b/packages/nodes/src/gutter/parametrics.ts
@@ -17,7 +17,7 @@ export const gutterParametrics: ParametricDescriptor<GutterNode> = {
     {
       label: 'Dimensions',
       fields: [
-        { key: 'length', kind: 'number', unit: 'm', min: 0.2, max: 12, step: 0.05 },
+        { key: 'length', kind: 'number', unit: 'm', min: 0.2, max: 1000, step: 0.05 },
         { key: 'size', kind: 'number', unit: 'm', min: 0.05, max: 0.3, step: 0.005 },
         {
           key: 'thickness',
diff --git a/packages/nodes/src/hvac-equipment/parametrics.ts b/packages/nodes/src/hvac-equipment/parametrics.ts
index 569fe82930..9130f9ed0a 100644
--- a/packages/nodes/src/hvac-equipment/parametrics.ts
+++ b/packages/nodes/src/hvac-equipment/parametrics.ts
@@ -17,9 +17,9 @@ export const hvacEquipmentParametrics: ParametricDescriptor<HvacEquipmentNode> =
     {
       label: 'Cabinet',
       fields: [
-        { key: 'width', kind: 'number', unit: 'm', min: 0.3, max: 2, step: 0.05 },
-        { key: 'depth', kind: 'number', unit: 'm', min: 0.3, max: 2, step: 0.05 },
-        { key: 'height', kind: 'number', unit: 'm', min: 0.4, max: 2.5, step: 0.05 },
+        { key: 'width', kind: 'number', unit: 'm', min: 0.3, max: 1000, step: 0.05 },
+        { key: 'depth', kind: 'number', unit: 'm', min: 0.3, max: 1000, step: 0.05 },
+        { key: 'height', kind: 'number', unit: 'm', min: 0.4, max: 1000, step: 0.05 },
       ],
     },
     {
diff --git a/packages/nodes/src/lean-to-extension/definition.ts b/packages/nodes/src/lean-to-extension/definition.ts
index af914d0f72..bcdd0f2648 100644
--- a/packages/nodes/src/lean-to-extension/definition.ts
+++ b/packages/nodes/src/lean-to-extension/definition.ts
@@ -47,7 +47,7 @@ function highEdgeHeightHandle(): HandleDescriptor<LeanToExtensionNode> {
     anchor: 'min',
     shape: 'tracker',
     min: 0.8,
-    max: 10,
+    max: 1000,
     currentValue: (node) => node.highEdgeHeight,
     magneticSnap: (node, newValue, sceneApi) => {
       const wall = resolveHostWall(node, sceneApi)
@@ -199,7 +199,7 @@ function spanHandle(side: 'left' | 'right'): HandleDescriptor<LeanToExtensionNod
     axis: 'x',
     anchor: side === 'right' ? 'min' : 'max',
     min: 0.5,
-    max: 100,
+    max: 1000,
     currentValue: (node) => node.span,
     apply: (node, span) => spanPatch(node, span, side),
     previewOverrides: (node, span, sceneApi) =>
@@ -225,7 +225,7 @@ leanToExtensionHandles.push({
   axis: 'z',
   anchor: 'min',
   min: 0.5,
-  max: 10,
+  max: 1000,
   currentValue: (node) => node.projection,
   apply: (node, projection) => ({
     projection,
diff --git a/packages/nodes/src/lean-to-extension/parametrics.ts b/packages/nodes/src/lean-to-extension/parametrics.ts
index b8061445af..cc28550c14 100644
--- a/packages/nodes/src/lean-to-extension/parametrics.ts
+++ b/packages/nodes/src/lean-to-extension/parametrics.ts
@@ -89,7 +89,7 @@ export const leanToExtensionParametrics: ParametricDescriptor<LeanToExtensionNod
           kind: 'number',
           unit: 'm',
           min: 0.5,
-          max: 100,
+          max: 1000,
           step: 0.1,
         },
         {
@@ -98,7 +98,7 @@ export const leanToExtensionParametrics: ParametricDescriptor<LeanToExtensionNod
           kind: 'number',
           unit: 'm',
           min: 0.5,
-          max: 10,
+          max: 1000,
           step: 0.1,
         },
         {
@@ -107,7 +107,7 @@ export const leanToExtensionParametrics: ParametricDescriptor<LeanToExtensionNod
           kind: 'number',
           unit: 'm',
           min: 0.8,
-          max: 10,
+          max: 1000,
           step: 0.05,
           visibleIf: (node) => node.connectionMode === 'manual' || !node.hostRoofSegmentId,
         },
@@ -178,7 +178,7 @@ export const leanToExtensionParametrics: ParametricDescriptor<LeanToExtensionNod
           kind: 'number',
           unit: 'm',
           min: 0.3,
-          max: 10,
+          max: 1000,
           step: 0.1,
           visibleIf: (node) => node.postLayoutMode === 'target-spacing',
         },
@@ -280,7 +280,7 @@ export const leanToExtensionParametrics: ParametricDescriptor<LeanToExtensionNod
           kind: 'number',
           unit: 'm',
           min: 0.2,
-          max: 10,
+          max: 1000,
           step: 0.05,
           visibleIf: (node) => node.connectionMode === 'manual' || !node.hostRoofSegmentId,
         },
diff --git a/packages/nodes/src/ridge-vent/panel.tsx b/packages/nodes/src/ridge-vent/panel.tsx
index 957c779525..fb8e41b373 100644
--- a/packages/nodes/src/ridge-vent/panel.tsx
+++ b/packages/nodes/src/ridge-vent/panel.tsx
@@ -157,7 +157,7 @@ export default function RidgeVentPanel() {
       <PanelSection title="Dimensions">
         <SliderControl
           label="Length"
-          max={8}
+          max={1000}
           min={0.5}
           onChange={(v) => handleUpdate({ length: v })}
           onCommit={(v) => handleUpdate({ length: v })}
@@ -216,8 +216,6 @@ export default function RidgeVentPanel() {
         />
         <SliderControl
           label="Y"
-          max={2}
-          min={-2}
           onChange={(v) =>
             handleUpdate({
               position: [node.position[0] ?? 0, v, node.position[2] ?? 0],
diff --git a/packages/nodes/src/ridge-vent/parametrics.ts b/packages/nodes/src/ridge-vent/parametrics.ts
index 1816553a7c..583cee381b 100644
--- a/packages/nodes/src/ridge-vent/parametrics.ts
+++ b/packages/nodes/src/ridge-vent/parametrics.ts
@@ -22,7 +22,7 @@ export const ridgeVentParametrics: ParametricDescriptor<RidgeVentNode> = {
     {
       label: 'Dimensions',
       fields: [
-        { key: 'length', kind: 'number', unit: 'm', min: 0.5, max: 8, step: 0.05 },
+        { key: 'length', kind: 'number', unit: 'm', min: 0.5, max: 1000, step: 0.05 },
         { key: 'width', kind: 'number', unit: 'm', min: 0.1, max: 0.6, step: 0.01 },
         { key: 'height', kind: 'number', unit: 'm', min: 0.03, max: 0.2, step: 0.005 },
       ],
diff --git a/packages/nodes/src/roof-segment/panel.tsx b/packages/nodes/src/roof-segment/panel.tsx
index 0f5ee3c4e9..559b520b35 100644
--- a/packages/nodes/src/roof-segment/panel.tsx
+++ b/packages/nodes/src/roof-segment/panel.tsx
@@ -353,7 +353,7 @@ export default function RoofSegmentPanel() {
       <PanelSection title="Footprint">
         <SliderControl
           label="Width"
-          max={25}
+          max={1000}
           min={0.5}
           onChange={(v) => handleUpdate({ width: v })}
           precision={2}
@@ -363,7 +363,7 @@ export default function RoofSegmentPanel() {
         />
         <SliderControl
           label="Depth"
-          max={25}
+          max={1000}
           min={0.5}
           onChange={(v) => handleUpdate({ depth: v })}
           precision={2}
@@ -376,7 +376,7 @@ export default function RoofSegmentPanel() {
       <PanelSection title="Wall Height">
         <SliderControl
           label="Wall"
-          max={5}
+          max={1000}
           min={0}
           onChange={(v) => handleUpdate({ wallHeight: v })}
           precision={2}
@@ -569,8 +569,6 @@ export default function RoofSegmentPanel() {
       <PanelSection title="Position">
         <SliderControl
           label="X"
-          max={50}
-          min={-50}
           onChange={(v) => {
             const pos = [...node.position] as [number, number, number]
             pos[0] = v
@@ -583,8 +581,6 @@ export default function RoofSegmentPanel() {
         />
         <SliderControl
           label="Y"
-          max={50}
-          min={-50}
           onChange={(v) => {
             const pos = [...node.position] as [number, number, number]
             pos[1] = v
@@ -597,8 +593,6 @@ export default function RoofSegmentPanel() {
         />
         <SliderControl
           label="Z"
-          max={50}
-          min={-50}
           onChange={(v) => {
             const pos = [...node.position] as [number, number, number]
             pos[2] = v
diff --git a/packages/nodes/src/roof/panel.tsx b/packages/nodes/src/roof/panel.tsx
index a14400bc43..ac07a728d1 100644
--- a/packages/nodes/src/roof/panel.tsx
+++ b/packages/nodes/src/roof/panel.tsx
@@ -273,8 +273,6 @@ export default function RoofPanel() {
       <PanelSection title="Position">
         <SliderControl
           label="X"
-          max={50}
-          min={-50}
           onChange={(v) => {
             const pos = [...node.position] as [number, number, number]
             pos[0] = v
@@ -287,8 +285,6 @@ export default function RoofPanel() {
         />
         <SliderControl
           label="Y"
-          max={50}
-          min={-50}
           onChange={(v) => {
             const pos = [...node.position] as [number, number, number]
             pos[1] = v
@@ -301,8 +297,6 @@ export default function RoofPanel() {
         />
         <SliderControl
           label="Z"
-          max={50}
-          min={-50}
           onChange={(v) => {
             const pos = [...node.position] as [number, number, number]
             pos[2] = v
diff --git a/packages/nodes/src/scan/parametrics.ts b/packages/nodes/src/scan/parametrics.ts
index 6e2f389aa2..1511ed3e41 100644
--- a/packages/nodes/src/scan/parametrics.ts
+++ b/packages/nodes/src/scan/parametrics.ts
@@ -6,7 +6,7 @@ export const scanParametrics: ParametricDescriptor<ScanNode> = {
       label: 'Transform',
       fields: [
         { key: 'position', kind: 'vec3' },
-        { key: 'scale', kind: 'number', min: 0.01, max: 10, step: 0.1 },
+        { key: 'scale', kind: 'number', min: 0.01, max: 1000, step: 0.1 },
       ],
     },
     {
diff --git a/packages/nodes/src/shelf/parametrics.ts b/packages/nodes/src/shelf/parametrics.ts
index 0f4fdb629d..5da33dc80a 100644
--- a/packages/nodes/src/shelf/parametrics.ts
+++ b/packages/nodes/src/shelf/parametrics.ts
@@ -70,10 +70,10 @@ export const shelfParametrics: ParametricDescriptor<ShelfNode> = {
     {
       label: 'Dimensions',
       fields: [
-        { key: 'width', kind: 'number', unit: 'm', min: 0.3, max: 3.0, step: 0.05 },
-        { key: 'depth', kind: 'number', unit: 'm', min: 0.1, max: 1.0, step: 0.05 },
-        { key: 'thickness', kind: 'number', unit: 'm', min: 0.01, max: 0.1, step: 0.005 },
-        { key: 'height', kind: 'number', unit: 'm', min: 0.05, max: 2.5, step: 0.05 },
+        { key: 'width', kind: 'number', unit: 'm', min: 0.3, max: 1000, step: 0.05 },
+        { key: 'depth', kind: 'number', unit: 'm', min: 0.1, max: 1000, step: 0.05 },
+        { key: 'thickness', kind: 'number', unit: 'm', min: 0.01, max: 1000, step: 0.005 },
+        { key: 'height', kind: 'number', unit: 'm', min: 0.05, max: 1000, step: 0.05 },
       ],
     },
     {
diff --git a/packages/nodes/src/skylight/panel.tsx b/packages/nodes/src/skylight/panel.tsx
index 1b54bba86b..8630dfba9b 100644
--- a/packages/nodes/src/skylight/panel.tsx
+++ b/packages/nodes/src/skylight/panel.tsx
@@ -428,7 +428,7 @@ export default function SkylightPanel() {
       <PanelSection title="Dimensions">
         <SliderControl
           label="Width"
-          max={3}
+          max={1000}
           min={0.3}
           onChange={(v) => previewProp({ width: v })}
           onCommit={(v) => commitProp({ width: v })}
@@ -440,7 +440,7 @@ export default function SkylightPanel() {
         />
         <SliderControl
           label="Height"
-          max={3}
+          max={1000}
           min={0.3}
           onChange={(v) => previewProp({ height: v })}
           onCommit={(v) => commitProp({ height: v })}
diff --git a/packages/nodes/src/skylight/parametrics.ts b/packages/nodes/src/skylight/parametrics.ts
index ca19a83700..90607694e0 100644
--- a/packages/nodes/src/skylight/parametrics.ts
+++ b/packages/nodes/src/skylight/parametrics.ts
@@ -18,8 +18,8 @@ export const skylightParametrics: ParametricDescriptor<SkylightNode> = {
     {
       label: 'Dimensions',
       fields: [
-        { key: 'width', kind: 'number', unit: 'm', min: 0.3, max: 3, step: 0.05 },
-        { key: 'height', kind: 'number', unit: 'm', min: 0.3, max: 3, step: 0.05 },
+        { key: 'width', kind: 'number', unit: 'm', min: 0.3, max: 1000, step: 0.05 },
+        { key: 'height', kind: 'number', unit: 'm', min: 0.3, max: 1000, step: 0.05 },
         { key: 'frameThickness', kind: 'number', unit: 'm', min: 0.02, max: 0.15, step: 0.005 },
         { key: 'frameDepth', kind: 'number', unit: 'm', min: 0.02, max: 0.2, step: 0.005 },
         { key: 'glassThickness', kind: 'number', unit: 'm', min: 0.005, max: 0.05, step: 0.001 },
diff --git a/packages/nodes/src/slab/panel.tsx b/packages/nodes/src/slab/panel.tsx
index b582b3ca97..22a2eefc13 100644
--- a/packages/nodes/src/slab/panel.tsx
+++ b/packages/nodes/src/slab/panel.tsx
@@ -306,7 +306,7 @@ export function SlabPanel() {
         {node.recessed ? (
           <SliderControl
             label="Depth"
-            max={2}
+            max={1000}
             min={MIN_SLAB_THICKNESS}
             onChange={handleRecessDepthChange}
             precision={2}
@@ -317,7 +317,7 @@ export function SlabPanel() {
         ) : (
           <SliderControl
             label="Thickness"
-            max={0.5}
+            max={1000}
             min={MIN_SLAB_THICKNESS}
             onChange={handleThicknessChange}
             precision={2}
diff --git a/packages/nodes/src/slab/parametrics.ts b/packages/nodes/src/slab/parametrics.ts
index 622a7098b3..a34e481933 100644
--- a/packages/nodes/src/slab/parametrics.ts
+++ b/packages/nodes/src/slab/parametrics.ts
@@ -22,7 +22,7 @@ export const slabParametrics: ParametricDescriptor<SlabNode> = {
           kind: 'number',
           unit: 'm',
           min: MIN_SLAB_THICKNESS,
-          max: 0.5,
+          max: 1000,
           step: 0.01,
           visibleIf: (n) => !n.recessed,
         },
diff --git a/packages/nodes/src/solar-panel/panel.tsx b/packages/nodes/src/solar-panel/panel.tsx
index 92351bc1be..aa7d7c913d 100644
--- a/packages/nodes/src/solar-panel/panel.tsx
+++ b/packages/nodes/src/solar-panel/panel.tsx
@@ -278,7 +278,7 @@ export default function SolarPanelPanel() {
       <PanelSection title="Panel">
         <SliderControl
           label="Width"
-          max={2.5}
+          max={1000}
           min={0.3}
           onChange={(v) => previewProp({ panelWidth: v })}
           onCommit={(v) => commitProp({ panelWidth: v })}
@@ -290,7 +290,7 @@ export default function SolarPanelPanel() {
         />
         <SliderControl
           label="Height"
-          max={3}
+          max={1000}
           min={0.3}
           onChange={(v) => previewProp({ panelHeight: v })}
           onCommit={(v) => commitProp({ panelHeight: v })}
diff --git a/packages/nodes/src/solar-panel/parametrics.ts b/packages/nodes/src/solar-panel/parametrics.ts
index 8c09d8eb3d..28a6aa0ea0 100644
--- a/packages/nodes/src/solar-panel/parametrics.ts
+++ b/packages/nodes/src/solar-panel/parametrics.ts
@@ -17,8 +17,8 @@ export const solarPanelParametrics: ParametricDescriptor<SolarPanelNode> = {
     {
       label: 'Panel dimensions',
       fields: [
-        { key: 'panelWidth', kind: 'number', unit: 'm', min: 0.4, max: 2, step: 0.01 },
-        { key: 'panelHeight', kind: 'number', unit: 'm', min: 0.4, max: 2.5, step: 0.01 },
+        { key: 'panelWidth', kind: 'number', unit: 'm', min: 0.4, max: 1000, step: 0.01 },
+        { key: 'panelHeight', kind: 'number', unit: 'm', min: 0.4, max: 1000, step: 0.01 },
         { key: 'gapX', kind: 'number', unit: 'm', min: 0, max: 0.2, step: 0.005 },
         { key: 'gapY', kind: 'number', unit: 'm', min: 0, max: 0.2, step: 0.005 },
       ],
diff --git a/packages/nodes/src/stair-segment/panel.tsx b/packages/nodes/src/stair-segment/panel.tsx
index 0c7a75b0d3..daad0fa4b2 100644
--- a/packages/nodes/src/stair-segment/panel.tsx
+++ b/packages/nodes/src/stair-segment/panel.tsx
@@ -160,7 +160,7 @@ export default function StairSegmentPanel() {
       <PanelSection title="Dimensions">
         <SliderControl
           label="Width"
-          max={5}
+          max={1000}
           min={0.5}
           onChange={(v) => handleUpdate({ width: v })}
           precision={2}
@@ -170,7 +170,7 @@ export default function StairSegmentPanel() {
         />
         <SliderControl
           label="Length"
-          max={10}
+          max={1000}
           min={0.5}
           onChange={(v) => handleUpdate({ length: v })}
           precision={2}
@@ -182,7 +182,7 @@ export default function StairSegmentPanel() {
           <>
             <SliderControl
               label="Height"
-              max={10}
+              max={1000}
               min={0.5}
               onChange={(v) => handleUpdate({ height: v })}
               precision={2}
@@ -214,7 +214,7 @@ export default function StairSegmentPanel() {
           {!node.fillToFloor && (
             <SliderControl
               label="Thickness"
-              max={1}
+              max={1000}
               min={0.05}
               onChange={(v) => handleUpdate({ thickness: v })}
               precision={2}
@@ -229,8 +229,6 @@ export default function StairSegmentPanel() {
       <PanelSection title="Position">
         <SliderControl
           label="X"
-          max={50}
-          min={-50}
           onChange={(v) => {
             const pos = [...node.position] as [number, number, number]
             pos[0] = v
@@ -243,8 +241,6 @@ export default function StairSegmentPanel() {
         />
         <SliderControl
           label="Y"
-          max={50}
-          min={-50}
           onChange={(v) => {
             const pos = [...node.position] as [number, number, number]
             pos[1] = v
@@ -257,8 +253,6 @@ export default function StairSegmentPanel() {
         />
         <SliderControl
           label="Z"
-          max={50}
-          min={-50}
           onChange={(v) => {
             const pos = [...node.position] as [number, number, number]
             pos[2] = v
diff --git a/packages/nodes/src/stair/panel.tsx b/packages/nodes/src/stair/panel.tsx
index fae2b5ac5c..9500bbce80 100644
--- a/packages/nodes/src/stair/panel.tsx
+++ b/packages/nodes/src/stair/panel.tsx
@@ -540,8 +540,6 @@ export default function StairPanel() {
       <PanelSection title="Position">
         <SliderControl
           label="X"
-          max={50}
-          min={-50}
           onChange={(v) => {
             const pos = [...node.position] as [number, number, number]
             pos[0] = v
@@ -554,8 +552,6 @@ export default function StairPanel() {
         />
         <SliderControl
           label="Y"
-          max={50}
-          min={-50}
           onChange={(v) => {
             const pos = [...node.position] as [number, number, number]
             pos[1] = v
@@ -568,8 +564,6 @@ export default function StairPanel() {
         />
         <SliderControl
           label="Z"
-          max={50}
-          min={-50}
           onChange={(v) => {
             const pos = [...node.position] as [number, number, number]
             pos[2] = v
diff --git a/packages/nodes/src/turbine-vent/panel.tsx b/packages/nodes/src/turbine-vent/panel.tsx
index 9588668a97..fc23df3142 100644
--- a/packages/nodes/src/turbine-vent/panel.tsx
+++ b/packages/nodes/src/turbine-vent/panel.tsx
@@ -181,7 +181,7 @@ export default function TurbineVentPanel() {
       <PanelSection title="Dimensions">
         <SliderControl
           label="Diameter"
-          max={0.7}
+          max={1000}
           min={0.15}
           onChange={(v) => previewProp({ diameter: v })}
           onCommit={(v) => handleUpdate({ diameter: v })}
@@ -193,7 +193,7 @@ export default function TurbineVentPanel() {
         />
         <SliderControl
           label="Height"
-          max={0.9}
+          max={1000}
           min={0.2}
           onChange={(v) => previewProp({ height: v })}
           onCommit={(v) => handleUpdate({ height: v })}
diff --git a/packages/nodes/src/turbine-vent/parametrics.ts b/packages/nodes/src/turbine-vent/parametrics.ts
index 04cfcbfa1a..6804207c16 100644
--- a/packages/nodes/src/turbine-vent/parametrics.ts
+++ b/packages/nodes/src/turbine-vent/parametrics.ts
@@ -23,8 +23,8 @@ export const turbineVentParametrics: ParametricDescriptor<TurbineVentNode> = {
     {
       label: 'Dimensions',
       fields: [
-        { key: 'diameter', kind: 'number', unit: 'm', min: 0.15, max: 0.7, step: 0.01 },
-        { key: 'height', kind: 'number', unit: 'm', min: 0.2, max: 0.9, step: 0.01 },
+        { key: 'diameter', kind: 'number', unit: 'm', min: 0.15, max: 1000, step: 0.01 },
+        { key: 'height', kind: 'number', unit: 'm', min: 0.2, max: 1000, step: 0.01 },
         { key: 'neckHeight', kind: 'number', unit: 'm', min: 0.02, max: 0.3, step: 0.01 },
         { key: 'vaneCount', kind: 'number', unit: '', min: 6, max: 36, step: 1 },
       ],
diff --git a/packages/nodes/src/wall/panel.tsx b/packages/nodes/src/wall/panel.tsx
index 0d2dc398e6..754d563406 100644
--- a/packages/nodes/src/wall/panel.tsx
+++ b/packages/nodes/src/wall/panel.tsx
@@ -257,11 +257,11 @@ export default function WallPanel() {
       <PanelSection title="Dimensions">
         <SliderControl
           label="Length"
-          max={metersToLinearUnit(20, unit)}
+          max={metersToLinearUnit(1000, unit)}
           min={metersToLinearUnit(0.1, unit)}
           onChange={(value) =>
             handleUpdateLength(
-              linearControlValueToMeters(value, unit, { maxMeters: 20, minMeters: 0.1 }),
+              linearControlValueToMeters(value, unit, { maxMeters: 1000, minMeters: 0.1 }),
             )
           }
           precision={2}
@@ -287,11 +287,11 @@ export default function WallPanel() {
         ) : (
           <SliderControl
             label="Height"
-            max={metersToLinearUnit(20, unit)}
+            max={metersToLinearUnit(1000, unit)}
             min={metersToLinearUnit(0.1, unit)}
             onChange={(v) =>
               handleUpdate({
-                height: linearControlValueToMeters(v, unit, { maxMeters: 20, minMeters: 0.1 }),
+                height: linearControlValueToMeters(v, unit, { maxMeters: 1000, minMeters: 0.1 }),
               })
             }
             precision={2}
@@ -318,12 +318,12 @@ export default function WallPanel() {
         )}
         <SliderControl
           label="Thickness"
-          max={metersToLinearUnit(1, unit)}
+          max={metersToLinearUnit(1000, unit)}
           min={metersToLinearUnit(0.05, unit)}
           onChange={(v) =>
             handleUpdate({
               thickness: linearControlValueToMeters(v, unit, {
-                maxMeters: 1,
+                maxMeters: 1000,
                 minMeters: 0.05,
               }),
             })
diff --git a/packages/nodes/src/wall/parametrics.ts b/packages/nodes/src/wall/parametrics.ts
index 4c721ac3b0..411013bc00 100644
--- a/packages/nodes/src/wall/parametrics.ts
+++ b/packages/nodes/src/wall/parametrics.ts
@@ -18,10 +18,10 @@ export const wallParametrics: ParametricDescriptor<WallNode> = {
     {
       label: 'Dimensions',
       fields: [
-        { key: 'thickness', kind: 'number', unit: 'm', min: 0.05, max: 0.6, step: 0.01 },
+        { key: 'thickness', kind: 'number', unit: 'm', min: 0.05, max: 1000, step: 0.01 },
         // `height` may be absent (plane-bound top); the custom panel owns the
         // Follows storey / Custom height mode switch, so this is metadata only.
-        { key: 'height', kind: 'number', unit: 'm', min: 1.5, max: 20, step: 0.05 },
+        { key: 'height', kind: 'number', unit: 'm', min: 0.1, max: 1000, step: 0.05 },
         { key: 'curveOffset', kind: 'number', unit: 'm', min: -3, max: 3, step: 0.05 },
       ],
     },
diff --git a/packages/nodes/src/window/parametrics.ts b/packages/nodes/src/window/parametrics.ts
index 4aa23abae0..785a94a2be 100644
--- a/packages/nodes/src/window/parametrics.ts
+++ b/packages/nodes/src/window/parametrics.ts
@@ -13,8 +13,8 @@ export const windowParametrics: ParametricDescriptor<WindowNode> = {
     {
       label: 'Dimensions',
       fields: [
-        { key: 'width', kind: 'number', unit: 'm', min: 0.3, max: 4, step: 0.05 },
-        { key: 'height', kind: 'number', unit: 'm', min: 0.3, max: 4, step: 0.05 },
+        { key: 'width', kind: 'number', unit: 'm', min: 0.3, max: 1000, step: 0.05 },
+        { key: 'height', kind: 'number', unit: 'm', min: 0.3, max: 1000, step: 0.05 },
       ],
     },
   ],
diff --git a/wiki/architecture/README.md b/wiki/architecture/README.md
index 0ef72a8255..d4ed804517 100644
--- a/wiki/architecture/README.md
+++ b/wiki/architecture/README.md
@@ -23,6 +23,7 @@ Canonical rules for code that touches `packages/core`, `packages/viewer`, `packa
 | [scene-registry](scene-registry.md) | Global node ID → Object3D map and `useRegistry` |
 | [spatial-queries](spatial-queries.md) | Placement validation (`canPlaceOnFloor`/`Wall`/`Ceiling`) for tools |
 | [node-schemas](node-schemas.md) | Zod schema pattern for node types, `createNode`, `updateNode` |
+| [inspector-field-limits](inspector-field-limits.md) | When a numeric inspector field may and may not have `min`/`max` — no arbitrary caps on dimensions |
 | [vertical-model](vertical-model.md) | Stored level heights, plane-bound wall/ceiling tops, slab placement + thickness, support hosts, clamp rules, and the load migration |
 | [events](events.md) | Typed event bus — emitting and listening to node and grid events |
 | [creating-rules](creating-rules.md) | How to add or update a page in this folder |
diff --git a/wiki/architecture/inspector-field-limits.md b/wiki/architecture/inspector-field-limits.md
new file mode 100644
index 0000000000..c209aae340
--- /dev/null
+++ b/wiki/architecture/inspector-field-limits.md
@@ -0,0 +1,26 @@
+# Inspector Field Limits
+
+*When a numeric inspector field may and may not have `min`/`max`.*
+
+Applies to: `packages/nodes/src/**/parametrics.ts`, `packages/nodes/src/**/panel.tsx`, and any `<SliderControl>` usage.
+
+`SliderControl` is a scrubby number input, not a range slider: dragging applies a step-based delta (`dx/4 × step`), and the wheel/arrow keys step likewise. `min`/`max` play no role in the interaction — they are pure clamps, defaulting to ±Infinity, and a typed value beyond them is clamped **silently**. A max therefore never "smooths" anything; it only blocks users, and blocking reads as "the app ignored me". Sweep of 2026-08: all arbitrary maxes were lifted (editor PR for `chore/field-limit-sweep`).
+
+## Rules
+
+- **Never cap a physical dimension at its "typical" size.** Wall length is not 20 m, roof spans are not 25 m. For dimension fields (width / height / depth / length / span / thickness / spacing / diameter in meters) use `max: 1000` — a value nobody legitimately reaches that still catches a pasted or fat-fingered number before it produces degenerate geometry (spatial grid, shadows, bake). If even a typo is harmless (see positions below), omit `max` entirely.
+- **Positions and offsets get no static bounds.** Omit `min`/`max`. Never feed a scrub window (`value ± N`) into `min`/`max` — that turns a UI convenience into a hidden clamp on typed input.
+- **Mins are validity only.** Dimensions need a small positive floor (typically 0.01–0.1 m) so zero/negative geometry can't exist. A min must never encode "typical" (the old wall `min: 1.5` blocked parapets and garden walls).
+- **Dynamic geometric bounds are encouraged.** Limits derived from the node or its host encode real validity and stay: door width ≤ host wall (`maxDoorWidth`), curve sagitta ≤ chord, roof-accessory positions within their segment face, cabinet carcass ≥ tallest module.
+- **Keep bounds that are not dimensions:** counts (rows, posts, steps, louvers — they multiply generated geometry, so the cap is a perf guard), percentages and 0–1 fractions, angle ranges (pitch, tilt, opening), rotation −180..180.
+
+## Deliberate exemptions
+
+- **MEP inch fields** (duct, pipe, lineset, HVAC collars): bounds mirror real trade sizes and carry domain meaning.
+- **Cabinet run width (3 m):** width drives auto-generated carcass modules, so the max is a geometry-count guard, not taste.
+- **Item dimensions:** the 30 m envelope ties into the studio item-builder and bake caps; change it there, not here.
+- **Detail knobs** (bevels, insets, overhangs, flanges, rails, sills, trim): bounded ranges are fine — they parameterize a shape, and extreme values produce self-intersecting geometry rather than a bigger valid object.
+
+Lengths that generate periodic children (gutter hangers, fence posts, downspout straps) scale instance counts with the value. That cost is user-visible and undoable — it is not a reason to reintroduce a cap.
+
+New kinds and new fields follow these rules; PR review should reject static maxes on dimension fields.