https://forums.autodesk.com/t5/hsm-post-processor-forum/disabling-g2-g3-arcs/m-p/6095170#M25693 <BLOCKQUOTE><TABLE border="1"><TBODY><TR><TH>Rob Lockwood wrote:</TH></TR><TR><TD><BR />This probably belongs in the post processor section..<BR /><BR />allowedCircularPlanes = undefined; // allow any circular motion<BR /><BR />This line, found right near the top of the post, sets which planes arcs can occur on. I forget the syntax, so someone can probably jump in and help.. I believe setting "1" in place of "undefined" will limit planes only to the XY plane, and will output linearized approximations for YZ/XZ arcs. This is probably a better compromise than eliminating them all, and I think it's worth a shot before linearizing them all.<BR /></TD></TR></TBODY></TABLE></BLOCKQUOTE><BR /><BR />You are looking for this line I guess:<BR /><BR /><PRE>allowedCircularPlanes =&nbsp; (1 &lt;&lt; PLANE_XY) | (0 &lt;&lt; PLANE_ZX) | (0 &lt;&lt; PLANE_YZ);</PRE> Tue, 06 Oct 2015 18:11:53 GMT Laurens-3DTechDraw 2015-10-06T18:11:53Z