diff --git a/src/mesh/model.js b/src/mesh/model.js
index a8babaf2..ec46f0e0 100644
--- a/src/mesh/model.js
+++ b/src/mesh/model.js
@@ -53,6 +53,36 @@ mesh.model = class MeshModel extends mesh.object {
         return this.mesh;
     }
 
+    move(x = 0, y = 0, z = 0) {
+        // doesn't fix bounds issue for some rotations. inspired by this threejs forum post:
+        // https://discourse.threejs.org/t/bounding-box-bigger-than-concave-object-extrudegeometry/26073/2
+        // this.mesh.applyMatrix4(new THREE.Matrix4().makeTranslation(x,y,z));
+        let pos = this.position();
+        pos.set(pos.x + x, pos.y + y, pos.z + z);
+        this.updateBoundsBox();
+        moto.Space.update();
+        return this;
+    }
+
+    rotate() {
+        throw "model rotate() not allowed";
+    }
+
+    rotation() {
+        throw "model rotation() not allowed";
+    }
+
+    qrotation() {
+        throw "model qrotation() not allowed";
+    }
+
+    position() {
+        if (arguments.length) {
+            throw "model position(...) not allowed";
+        }
+        return super.position(...arguments);
+    }
+
     sync() {
         moto.client.fn.model_sync({
             vertices: this.mesh.geometry.attributes.position.array,
diff --git a/src/mesh/work.js b/src/mesh/work.js
index e510ea1a..86ed010e 100644
--- a/src/mesh/work.js
+++ b/src/mesh/work.js
@@ -30,7 +30,6 @@ moto.worker.bind("model_sync", (data, send) => {
     geo.computeVertexNormals();
     let m4 = space_rotation.clone().multiply( new THREE.Matrix4().fromArray(matrix) );
     geo.applyMatrix4(m4);
-    return send.done();
     // for debugging matrix ops
     send.done(geo.attributes.position.array);
 });