https://forums.autodesk.com/t5/machining-discussions-forum/best-way-to-program-with-a-double-chamfer-mill/m-p/6091185#M5264 <BLOCKQUOTE><TABLE border="1"><TBODY><TR><TH>CGPM wrote:</TH></TR><TR><TD><BR />How do you program the tool for the undercut?&nbsp; Neither offset for the bottom height nor chamfer tip offset, or chamfer offset, work.&nbsp; I need the tool to be .1" below the contour.<BR /><BR />Got it, I think.&nbsp; The combination of chamfer width and axial stock to leave can add up to .1" and posts correctly.<BR /></TD></TR></TBODY></TABLE></BLOCKQUOTE><BR />If you want to undercut you don't use chamfer. Does that help you? Mon, 07 Sep 2015 18:59:08 GMT Laurens-3DTechDraw 2015-09-07T18:59:08Z