Well spotted - this file is slightly corrupted and although it has been
included with the Trial version since July, you are the first person to
have spotted the problem.
The Evaluation files should allow you to recalculate and save the toolpaths
at any size and with a new combination of cutters. But the 3D_Bevel_Sign
is internally 'damaged' and stops you doing this, making the file pretty
I have e-mailed you the Mach toolpath saved from the Release version
and this does show that each pass is at a constant depth.
Thanks for taking the time to let us now about this issue.