diff --git a/js/cam/assemblers/AssemblerPost.js b/js/cam/assemblers/AssemblerPost.js
index 667cb95b960071c1f0ca31db4894aecdb02beb19..ea95ebb58d5ae12df38f7138438acbc555fdc214 100644
--- a/js/cam/assemblers/AssemblerPost.js
+++ b/js/cam/assemblers/AssemblerPost.js
@@ -61,7 +61,7 @@ define(['underscore', 'appState', 'lattice', 'cam'], function(_, appState, latti
         this.customChangeZLayer = function(currentIndex, lastIndex, exporter, settings, context, self){
     var data = "";
     if (lastIndex === null || (currentIndex.z-lastIndex.z)%2 != 0){
-        data += exporter.addLine("G0", ["A" + (currentIndex.z%2*0.3125).toFixed(4)], "new layer");
+        data += exporter.addLine("G0", ["A" + ((currentIndex.z%2+1)*0.3125).toFixed(4)], "new layer");
         data += "\n";
     }
     return data;
diff --git a/js/plists/CamPList.js b/js/plists/CamPList.js
index a8f9271afc595a03251cbe4ce93728711c9f335c..e8e41c182a7d520bf74a11638a5fc0de0df02907 100644
--- a/js/plists/CamPList.js
+++ b/js/plists/CamPList.js
@@ -102,7 +102,7 @@ define(['three'], function(THREE){
                 stock:{
                     stock1: {
                         description:{
-                            materialName: "brass",
+                            materialName: "fiberGlass",
                             length: 4
                         },
                         name: "Stock 1",
@@ -111,7 +111,7 @@ define(['three'], function(THREE){
                     },
                     stock2: {
                         description:{
-                            materialName: "fiberGlass",
+                            materialName: "brass",
                             length: 4
                         },
                         name: "Stock 2",