I'm not a machinist by trade but am a retired Marine and Chemical Engineer. I have a 4 axis mill and use BOBCAD V32 to drive the mill. I engrave around a cylinder. I have no major problem in building my cylinder with engraving. The V32 softwares works well. However I have a very difficult time in seeing the simulation even though I click on the Simulation Key. I get nothing. Can anyone help? Thank You!