diff --git a/web/app/cad/craft/revolve/revolveOperation.js b/web/app/cad/craft/revolve/revolveOperation.js
index 66634356..763226ed 100644
--- a/web/app/cad/craft/revolve/revolveOperation.js
+++ b/web/app/cad/craft/revolve/revolveOperation.js
@@ -1,5 +1,7 @@
 import RevolveForm from './RevolveForm';
 import schema from './schema';
+import {createRevolvePreviewGeomProvider, revolvePreviewGeomProvider} from './revolvePreviewer';
+import {NOOP} from '../../../../../modules/gems/func';
 
 export default {
   id: 'REVOLVE',
@@ -7,8 +9,8 @@ export default {
   icon: 'img/cad/revolve',
   info: 'creates a solid based on revolve surfaces',
   paramsInfo: ({angle}) => angle,
-  previewGeomProvider: () => new THREE.Geometry(),
-  run: (request) => console.dir(request),
+  previewGeomProvider: revolvePreviewGeomProvider,
+  run: NOOP,
   form: RevolveForm,
   schema
 };
diff --git a/web/app/cad/craft/revolve/revolvePreviewer.js b/web/app/cad/craft/revolve/revolvePreviewer.js
new file mode 100644
index 00000000..dc7fbcef
--- /dev/null
+++ b/web/app/cad/craft/revolve/revolvePreviewer.js
@@ -0,0 +1,36 @@
+import {createMeshGeometry} from 'scene/geoms';
+import {DEG_RAD} from '../../../math/math';
+import {revolveToTriangles} from '../../legacy/mesh/revolve';
+
+let cache = {};
+
+export function revolvePreviewGeomProvider(params, services) {
+
+  const face = services.cadRegistry.findFace(params.face);
+  const axisModel = services.cadRegistry.findSketchObject(params.axis);
+  const axis = axisModel.sketchPrimitive;
+  if (!face || !face.sketch || !axis) return null;
+  let contours = face.sketch.fetchContours();
+
+  let polygons = [];
+  for (let contour of contours) {
+    const curves = contour.transferInCoordinateSystem(face.csys);
+    let polygon = [];
+    for (let curve of curves) {
+      let points = curve.tessellate();
+      for (let i = 0; i < points.length - 1; i++) {
+        polygon.push(points[i]);
+      }
+    }
+    polygons.push(polygon);
+  }
+
+  let angle = params.angle * DEG_RAD;
+  let tr = face.csys.outTransformation.apply;
+  const triangles = revolveToTriangles(polygons, [tr(axis.a), tr(axis.b)], angle, defaultResolution(params.angle), true);
+  return createMeshGeometry(triangles);
+}
+
+function defaultResolution(angle) {
+  return Math.max(2, Math.round(Math.abs(angle) / 4.0));
+}
diff --git a/web/app/cad/legacy/mesh/revolve.js b/web/app/cad/legacy/mesh/revolve.js
index 240ad1a2..a0069165 100644
--- a/web/app/cad/legacy/mesh/revolve.js
+++ b/web/app/cad/legacy/mesh/revolve.js
@@ -2,6 +2,7 @@ import {Matrix3} from '../../../math/l3space'
 import Vector from 'math/vector';
 import * as math from '../../../math/math'
 import {createShared} from '../../cad-utils'
+import {TriangulatePolygons} from '../../tess/triangulation';
 
 function Group(derivedFrom) {
   this.polygons = [];
@@ -68,10 +69,11 @@ export function revolveToWireframe(polygons, axisSegment, angle, resolution) {
   return out;
 }
 
-export function revolveToTriangles(polygons, axisSegment, angle, resolution) {
+export function revolveToTriangles(polygons, axisSegment, angle, resolution, triangulateBases) {
   const out = [];
+  let lidNormal = null, baseNormal = null;
   //add initial polygon
-  revolveIterator(polygons, axisSegment, angle, resolution, (pOrig, pRot, p, q) => {
+  let lids = revolveIterator(polygons, axisSegment, angle, resolution, (pOrig, pRot, p, q, r, id, i, length) => {
     //skip point if they are on the axis of revolving
     if (!math.equal(0, math.distanceAB3(pOrig[q], pRot[q]))) {
       out.push( [pOrig[p], pOrig[q], pRot[q]] );
@@ -79,7 +81,24 @@ export function revolveToTriangles(polygons, axisSegment, angle, resolution) {
     if (!math.equal(0, math.distanceAB3(pOrig[p], pRot[p]))) {
       out.push( [ pRot[q],  pRot[p], pOrig[p]] );
     }
+    let last = i === length - 1
+    if (last && !lidNormal) {
+      lidNormal = pRot[q].minus(pOrig[q])._normalize();
+    }
+    if (i === 0 && !baseNormal) {
+      baseNormal = pRot[q].minus(pOrig[q])._normalize()
+    }
   });
+  if (triangulateBases && lidNormal && baseNormal) {
+    function triangulatePolygons(polygons, normal) {
+      TriangulatePolygons(polygons, normal, (v) => v.toArray(), (arr) => new Vector().set3(arr))
+        .forEach(tr => out.push(tr));
+    }
+    triangulatePolygons(lids, lidNormal);
+    triangulatePolygons(polygons, baseNormal);
+    
+  }
+
   if (angle < 0) {
     out.forEach(tr => tr.reverse());
   }
@@ -107,7 +126,7 @@ export function revolveIterator(polygons, axisSegment, angle, resolution, callba
       const pRot = rotatedPolygons[i];
       const n = pOrig.length;
       for (let p = n - 1, q = 0; q < n; p = q ++) {
-        callback(pOrig, pRot, p, q, reverse, segmentId ++);
+        callback(pOrig, pRot, p, q, reverse, segmentId ++, resIndex, resolution);
       }
     }
     polygons = rotatedPolygons;
diff --git a/web/app/cad/preview/previewPlugin.js b/web/app/cad/preview/previewPlugin.js
index e96d03c5..1c39b57b 100644
--- a/web/app/cad/preview/previewPlugin.js
+++ b/web/app/cad/preview/previewPlugin.js
@@ -12,17 +12,26 @@ export function activate(ctx) {
       let previewer = null;
       materializedWorkingRequest$.attach(({type, params}) => {
         if (previewer === null) {
-          if (operation.previewGeomProvider) {
-            previewer = createPreviewer(operation.previewGeomProvider, services, params);
-          } else if (operation.previewer) {
-            previewer = operation.previewer(ctx, params, wizCtx.updateParams);
+          try {
+            if (operation.previewGeomProvider) {
+              previewer = createPreviewer(operation.previewGeomProvider, services, params);
+            } else if (operation.previewer) {
+              previewer = operation.previewer(ctx, params, wizCtx.updateParams);
+            }
+          } catch (e) {
+            console.error(e);
+            return;
           }
           wizCtx.addDisposer(() => {
             previewer.dispose();
             ctx.services.viewer.requestRender();
           });
         } else {
-          previewer.update(params);
+          try {
+            previewer.update(params);
+          } catch (e) {
+            console.error(e);
+          }
         }
         ctx.services.viewer.requestRender();
       });