I thought maybe seeing/having proven machine sim could limit the possibility of crashes, etc. Needless to say that whatever will need to go inside that high speed milling machine will need to, at least, pass Machine Simulation before. The reason I've asked for this is because the machine I am getting has 60m/min rapids and using all sort of fixtures. Just purchased a new machine and asked my CAM freelancer to re-write most of my parts to accommodate this new machine and fixtures.