diff --git a/src/Sim.tsx b/src/Sim.tsx
index 442fb524..36e2b7e1 100644
--- a/src/Sim.tsx
+++ b/src/Sim.tsx
@@ -88,13 +88,25 @@ export class Space {
   }
   
   get scene() { return this.scene_; }
+
   set scene(scene: Scene) {
     this.scene_ = scene;
-    if (this.sceneBinding_) this.sceneBinding_.scriptManager.scene = this.scene_;
-    
+    if (this.sceneBinding_) {
+      this.sceneBinding_.scriptManager.scene = this.scene_;
+    }
+
+    // this.sceneSetting_ is true if we are currently setting the scene
+    // this.debounceUpdate_ is true if we are currently updating the store
+    // console.log("Check scene status (setting, debounce, not binding", this.sceneSetting_, this.debounceUpdate_, !this.sceneBinding_);
     if (this.sceneSetting_ || this.debounceUpdate_ || !this.sceneBinding_) {
-      if (this.sceneBinding_ && !this.sceneSetting_) this.sceneBinding_.scene = scene;
-      if (this.sceneSetting_ && !this.debounceUpdate_) this.nextScene_ = scene;
+      if (this.sceneBinding_ && !this.sceneSetting_) {
+        // console.log("setting next scene in sim set scene binding", scene);
+        this.sceneBinding_.scene = scene;
+      }
+      if (this.sceneSetting_ && !this.debounceUpdate_) {
+        // console.log("setting next scene in sim set scene", scene);
+        this.nextScene_ = scene;
+      }
       return;
     }
 
@@ -328,7 +340,10 @@ export class Space {
 
     // Update state with significant changes, if needed
     this.debounceUpdate_ = true;
-    if (setNodeBatch.nodeIds.length > 0) this.onSetNodeBatch?.(setNodeBatch);
+    // if (setNodeBatch.nodeIds.length > 0) {
+    //   console.log("setting node batch in sim updateStore_", setNodeBatch);
+    //   this.onSetNodeBatch?.(setNodeBatch);
+    // }
     this.debounceUpdate_ = false;
   };
 
diff --git a/src/node-templates/index.ts b/src/node-templates/index.ts
index e8c6d043..289b7181 100644
--- a/src/node-templates/index.ts
+++ b/src/node-templates/index.ts
@@ -101,6 +101,40 @@ const reamTemplate: Node.TemplatedNode<Node.Obj> = {
   },
 };
 
+const matATemplate: Node.TemplatedNode<Node.Obj> = {
+  type: 'object',
+  geometryId: 'mat',
+  physics: {
+    type: 'box',
+    restitution: .3,
+    friction: 1,
+  },
+  material: {
+    type: 'basic',
+    color: {
+      type: "texture",
+      uri: "/static/textures/KIPR_Surface_A.png"
+    },
+  },
+};
+
+const matBTemplate: Node.TemplatedNode<Node.Obj> = {
+  type: 'object',
+  geometryId: 'mat',
+  physics: {
+    type: 'box',
+    restitution: .3,
+    friction: 1,
+  },
+  material: {
+    type: 'basic',
+    color: {
+      type: "texture",
+      uri: "/static/textures/KIPR_Surface_B.png"
+    },
+  },
+};
+
 const sciencePadTemplate: Node.TemplatedNode<Node.Obj> = {
   type: 'object',
   geometryId: 'sciencepad',
@@ -282,6 +316,8 @@ export const preBuiltTemplates = Object.freeze<Dict<Node.TemplatedNode<Node>>>({
   'radscience': radscienceTemplate,
   'noradscience': noradscienceTemplate,
   'ream': reamTemplate,
+  'matA': matATemplate,
+  'matB': matBTemplate,
   'basalt': basaltTemplate,
   'anorthosite': anorthositeTemplate,
   'breccia': brecciaTemplate,
@@ -329,6 +365,14 @@ export const preBuiltGeometries = Object.freeze<Dict<Geometry>>({
       z: Distance.centimeters(21.59),
     },
   },
+  'mat': {
+    type: 'box',
+    size: {
+      x: Distance.feet(2),
+      y: Distance.centimeters(.1),
+      z: Distance.feet(4),
+    }
+  },
   'basalt': {
     type: 'sphere',
     radius: Distance.centimeters(5),
diff --git a/src/scenes/jbcBase.ts b/src/scenes/jbcBase.ts
index 367cdc0f..d4b0c036 100644
--- a/src/scenes/jbcBase.ts
+++ b/src/scenes/jbcBase.ts
@@ -83,26 +83,14 @@ export function createBaseSceneSurfaceA(): Scene {
     },
     nodes: {
       'robot': ROBOT,
-      'mat': {
-        type: 'object',
-        geometryId: 'mat',
+      'matA': {
+        type: 'from-jbc-template',
+        templateId: 'matA',
         name: tr('JBC Mat A'),
         startingOrigin: JBC_MAT_ORIGIN,
         origin: JBC_MAT_ORIGIN,
         visible: true,
         editable: true,
-        physics: {
-          type: 'box',
-          restitution: .3,
-          friction: 1,
-        },
-        material: {
-          type: 'basic',
-          color: {
-            type: "texture",
-            uri: "/static/textures/KIPR_Surface_A.png"
-          },
-        },
       },
       'ground': {
         type: 'object',
@@ -166,26 +154,14 @@ export function createBaseSceneSurfaceB(): Scene {
     },
     nodes: {
       'robot': ROBOT,
-      'mat': {
-        type: 'object',
-        geometryId: 'mat',
+      'matB': {
+        type: 'from-jbc-template',
+        templateId: 'matB',
         name: tr('JBC Mat B'),
         startingOrigin: JBC_MAT_ORIGIN,
         origin: JBC_MAT_ORIGIN,
         visible: true,
         editable: true,
-        physics: {
-          type: 'box',
-          restitution: .3,
-          friction: 1,
-        },
-        material: {
-          type: 'basic',
-          color: {
-            type: "texture",
-            uri: "/static/textures/KIPR_Surface_B.png"
-          },
-        },
       },
       'ground': {
         type: 'object',