This would make perfect sense to me.  What am I missing?  If there was a "Max Cut Depth Per Pass" and "Max Total Cut Depth" for each tool, then you would never have to make Multiple step tools, or multipass tools (providing only 1 tool number is involved).  MV would always add passes as needed for thickness.  The Vectric programs are set up that way, and I haven't run into any problems because of it.  There must be a reason so if anybody knows what I'm overlooking, please tell me?