https://forums.autodesk.com/t5/machining-discussions-forum/multipitch-threadmill-support/m-p/6101442#M7816 <BLOCKQUOTE><TABLE border="1"><TBODY><TR><TH>Laurens-3DTechDraw wrote:</TH></TR><TR><TD><BR />The first picture is almost there. Just set the top(Heights tab), the pitch(or a little more to be certain) above the bottom value.<BR /></TD></TR></TBODY></TABLE></BLOCKQUOTE><BR /><BR />Success!&nbsp; Thank you, Laurens! Setting the heights tab was trick! I'll have to run it on my VMC to be sure--but the simulation certainly looks about right--and I think from here it's just about adjusting the pitch correctly.&nbsp; I just wish that Autodesk had an official "Threadmill" mill type in the library instead of having to trick the program. <BR /><BR />Below is for reference for others who may run into the same issue.&nbsp; Thanks for all the help everyone!<BR /><BR /><BR /><IMG src="http://designdynamictactical.com/images/success.png" /> Tue, 03 Mar 2015 10:26:12 GMT Anonymous 2015-03-03T10:26:12Z