[cncmessiah]

HI ANYBODY GOT ANY HINTS TIPS FOR THREAD MILLING M8 X1.25 THROUGH HOLE IN 316 STAINLESS STEEL ON A BRAND NEW STAR 32 J SLIDING HEAD LATHE .MACHINED LOTS OF THE ALUMINIUM VERSION WITH NO PROBLEMS .TOTAL NEWBIE TO THREAD MILLING .ANY HELP GREATLY APPRECIATED

[MCImes]

You say you have problems. What issues are you having specifically?

If your code worked in aluminum but not in stainless you probably need to decrease your speed and feed. 316 will break tools very quickly if you push them too hard or fast. What are you using for speeds and feeds? Is this an internal or external thread?

Also, you should probably make the thread in 2 passes with the first pass 70% depth and the 2nd pass full depth.

Edit: just thought of this. If you are milling off center in polar mode (g12.1 on a citizen), make sure your tool is on center. If your tool is off center the tool path wont come out right and your tool could be hitting more material than intended.