diff --git a/Machining/DemoRenderingMachiningProcessAndStripPosSelection.cs b/Machining/DemoRenderingMachiningProcessAndStripPosSelection.cs
index e97e073..5d54970 100644
--- a/Machining/DemoRenderingMachiningProcessAndStripPosSelection.cs
+++ b/Machining/DemoRenderingMachiningProcessAndStripPosSelection.cs
@@ -49,7 +49,7 @@ namespace Sample.Wpf.Machining
             var projectDisplayee = new MachiningProjectDisplayee(machiningProject);
             projectDisplayee.RenderingFlagBitArray[(int)RenderingFlag.Mech] = true;
             projectDisplayee.RenderingFlagBitArray[(int)RenderingFlag.Fixture] = true;
-            projectDisplayee.RenderingFlagBitArray[(int)RenderingFlag.WorkpieceGeom] = true;
+            projectDisplayee.RenderingFlagBitArray[(int)RenderingFlag.WorkpieceGeom] = false;
             projectDisplayee.RenderingFlagBitArray[(int)RenderingFlag.ClStrip] = true;
             projectDisplayee.RenderingFlagBitArray[(int)RenderingFlag.DimensionBar] = true;
             #endregion