diff --git a/js/fea/DmaCell.js b/js/fea/DmaCell.js
index dea48475b8bae118302acf29d012b1fa89daf4a9..09d4e388b9289b4231b49af7c550f092d02c63cc 100644
--- a/js/fea/DmaCell.js
+++ b/js/fea/DmaCell.js
@@ -19,6 +19,7 @@ function DMACell(indices, scale, cellMode, partType) {
 
     this.draw(scale, cellMode, partType);
 
+    this.hideForStockSimulation = false;
 }
 
 DMACell.prototype._sceneType = function(indices){
@@ -27,6 +28,7 @@ DMACell.prototype._sceneType = function(indices){
 };
 
 DMACell.prototype.draw = function(scale, cellMode, partType){
+    if (this.hideForStockSimulation) return;
     if (!scale) scale = dmaGlobals.lattice.get("scale");
     if (!cellMode) cellMode = dmaGlobals.appState.get("cellMode");
     if (!partType)  partType = dmaGlobals.lattice.get("partType");
@@ -54,7 +56,7 @@ DMACell.prototype.draw = function(scale, cellMode, partType){
     });
 };
 
-DMACell.prototype.hide = function(){
+DMACell.prototype.hide = function(){//only used in the context of stock simulation
     this._setCellMeshVisibility(false);
     _.each(this.parts, function(part){
         if (part) part.setVisibility(false);
diff --git a/js/models/Lattice.js b/js/models/Lattice.js
index 5785a5a3a51dc5d7eed6deb15f2dc7508a6cf984..5dee5b0d19b8c46e499ab62dd8ed885d9d667948 100644
--- a/js/models/Lattice.js
+++ b/js/models/Lattice.js
@@ -353,14 +353,20 @@ Lattice = Backbone.Model.extend({
     //hide show cells during stock simulation
     hideCells: function(){
         this._iterCells(this.get("cells"), function(cell){
-            if (cell) cell.hide();
+            if (cell) {
+                cell.hide();
+                cell.hideForStockSimulation = true;
+            }
         });
         dmaGlobals.three.render();
     },
 
     showCells: function(){
         this._iterCells(this.get("cells"), function(cell){
-            if (cell) cell.draw();
+            if (cell) {
+                cell.hideForStockSimulation = false;
+                cell.draw();
+            }
         });
         dmaGlobals.three.render();
     },
@@ -368,7 +374,10 @@ Lattice = Backbone.Model.extend({
     showCellAtIndex: function(index){
         var latticeIndex = this._subtract(index, this.get("cellsMin"));
         var cell = this.get("cells")[latticeIndex.x][latticeIndex.y][latticeIndex.z];
-        if (cell) cell.draw();
+        if (cell) {
+            cell.hideForStockSimulation = false;
+            cell.draw();
+        }
         else console.warn("placing a cell that does not exist");
     },