I'm having similar problems (using MDT6):
I'm trying to make an off-center circular hole with an 18-degree down-angle through a circular plate. I'm muddling through the help section on work planes and work points, but I'm still not able to generate a hole with the appropriate down-angle on the...
You might want to check the NIST Cyrogenics Group material properties website:
http://cryogenics.nist.gov/NewFiles/material_properties.html
Christopher Bass cdbass@indiana.edu
Indiana University Cyclotron Facility