The path of the extruder to make sure that there are no hidden surfaces in the drawing. I see that there are some very expensive simulators for cad/cam machines. I have found a freebie that does the job called Gcode Simulatot at www.gcodesim.dietzm.de which does the job quite well. It runs on Java. You can speed it up, does about a 2 hour print job in 10-15 minutes.by johno - 3D Design tools
I am a newbe to 3d printing and am wordering if there is a reasonable simulation program. I am using Cura on an Ultimaker Original.by johno - 3D Design tools