Thanks for the replies! I'll give what Ray D suggested and get back to you.( it may take a while as I'm on to other priorities) I cannot share the Mcam file, sorry. Yes it can rotate negative. ...keith

Hello, I'm trying to post a c-axis program and I'm getting rather strange large C moves. When I run the program the spindle dosent move when it should be making the proper c-axis moves. This is the first time I've posted a C-axis program with this post. Clearly I dont have something set correctly in my md. I'm using the proper MD for this machine, its labled "Mazak QTS 200M", but, not real comfortable editing machine defs and post. Any ideas from you lathe masters out there? ....Keith Here is a sampling of the output code: ( 3/16 FLAT ENDMILL) (MAZAK QTS 200M) (MACHINE GROUP-1) G53.5 N2 T0202 G19 G98 M200 G0 C90. G0 X1.45 Y0. Z-1.53125 M8 G97 S2500 M203 G1 X1.2 F6.16 G41 C-270. F668.45 G0 X1.4 X1.45 Z-1.36875 C450. G1 X1.2 F6.16 C810. F668.45......... I