diff --git a/web/app/cad/craft/primitives/simplePlane/SimplePlaneWizard.jsx b/web/app/cad/craft/primitives/simplePlane/SimplePlaneWizard.jsx
index 15bc911a..91369f6c 100644
--- a/web/app/cad/craft/primitives/simplePlane/SimplePlaneWizard.jsx
+++ b/web/app/cad/craft/primitives/simplePlane/SimplePlaneWizard.jsx
@@ -12,7 +12,7 @@ export default function PlaneWizard() {
       <RadioButton value='XZ' />
       <RadioButton value='ZY' />
     </RadioButtonsField>
-    <Entity name='parallelTo' />
+    <Entity name='datum' />
     <NumberField name='depth' />
   </Group>;
 }
\ No newline at end of file
diff --git a/web/app/cad/craft/primitives/simplePlane/simplePlaneOpSchema.js b/web/app/cad/craft/primitives/simplePlane/simplePlaneOpSchema.js
index 165cf07d..56c99000 100644
--- a/web/app/cad/craft/primitives/simplePlane/simplePlaneOpSchema.js
+++ b/web/app/cad/craft/primitives/simplePlane/simplePlaneOpSchema.js
@@ -4,10 +4,14 @@ export default {
     enum: ['XY', 'XZ', 'ZY'],
     defaultValue: 'XY'
   },
-  parallelTo: {
+  datum: {
     type: 'entity',
-    allowedKinds: ['face'],
+    allowedKinds: ['face', 'datum'],
     optional: true,
+    defaultValue: {
+      usePreselection:  true,
+      preselectionIndex: 0,
+    }
   },
   depth: {
     type: 'number',
diff --git a/web/app/cad/craft/primitives/simplePlane/simplePlaneOperation.js b/web/app/cad/craft/primitives/simplePlane/simplePlaneOperation.js
index b5e89f5a..1c74fb6c 100644
--- a/web/app/cad/craft/primitives/simplePlane/simplePlaneOperation.js
+++ b/web/app/cad/craft/primitives/simplePlane/simplePlaneOperation.js
@@ -6,21 +6,25 @@ import {MOpenFaceShell} from '../../../model/mopenFace';
 import schema from './simplePlaneOpSchema';
 import {PlaneSurfacePrototype} from '../../../model/surfacePrototype';
 import {STANDARD_BASES} from 'math/basis';
+import {MFace} from "cad/model/mface";
+import CSys from "math/csys";
+import {MDatum} from "cad/model/mdatum";
 
-function paramsToPlane({orientation, parallelTo, depth}, cadRegistry) {
-  let face = null;
-  if (parallelTo) {
-    face = cadRegistry.findFace(parallelTo);
-  }
-  let plane = null;
-  if (face === null) {
-    const normal = STANDARD_BASES[orientation][2];
-    plane = new Plane(normal, depth);
+function paramsToPlane({orientation, datum, depth}, cadRegistry) {
+  const csys = datum ? datum.csys : CSys.ORIGIN;
+
+  let axis;
+  if (orientation === 'XY') {
+    axis = csys.z;
+  } else if (orientation === 'XZ') {
+    axis = csys.y;
   } else {
-    let base = face.surface.tangentPlaneInMiddle();
-    plane = new Plane(base.normal, base.w + depth);
+    axis = csys.x;
   }
-  return plane;
+
+  const w = axis.multiply(depth)._plus(csys.origin).dot(axis);
+
+  return new Plane(axis, w);
 }
 
 function createPlane(params, {cadRegistry}) {
diff --git a/web/app/cad/craft/schema/initializeBySchema.ts b/web/app/cad/craft/schema/initializeBySchema.ts
index d2a27362..fbb5bd20 100644
--- a/web/app/cad/craft/schema/initializeBySchema.ts
+++ b/web/app/cad/craft/schema/initializeBySchema.ts
@@ -23,6 +23,7 @@ export default function initializeBySchema(schema: OperationSchema, context: Cor
       }
     } else if (md.type === Types.entity && md.defaultValue !== undefined) {
       const defaultValue = md.defaultValue;
+      console.log(defaultValue)
       if (defaultValue.usePreselection === true && defaultValue.preselectionIndex !== undefined) {
         const allowedKinds = md.allowedKinds;
         const currentSelection =
diff --git a/web/app/cad/workbench/menuConfig.js b/web/app/cad/workbench/menuConfig.js
index fa69134b..5f0fe9ae 100644
--- a/web/app/cad/workbench/menuConfig.js
+++ b/web/app/cad/workbench/menuConfig.js
@@ -53,7 +53,7 @@ export default [
     label: 'datum',
     cssIcons: ['magic'],
     info: 'operations on datum',
-    actions: ['DATUM_ROTATE', 'DATUM_MOVE', '-', 'PLANE_FROM_DATUM', '-', 'BOX', 'SPHERE', 'CYLINDER', 'TORUS', 'CONE']
+    actions: ['PLANE', '-', 'BOX', 'SPHERE', 'CYLINDER', 'TORUS', 'CONE']
     // actions: ['DATUM_MOVE', 'DATUM_ROTATE', 'DATUM_REBASE', '-', 'PLANE_FROM_DATUM', 'BOX', 'SPHERE', 'TORUS', 
     //   'CONE', 'CYLINDER']
   },