Quote Originally Posted by Washout View Post
Ah yes DOC - I tried a 1mm and 3mm DOC and its 6082 T651 Ali
You'll need a very strong machine with powerful spindle to cut at 3mm DOC and those feed rates Gwiz suggested with 8mm cutter.

Try 1mm @ 800mm/min 10,000rpm and take it from there.!!. . . . I cut @2.5-3mm Doc @800mm/min 9-10,000 rpm 8mm 3 flute ripper using blown air.
Each machine is different so you'll need to play with settings to find the sweet spot for yours. If you push too hard to start with you'll just cause premature wear and possible damage machine so start off easy with DOC and Feed rate then use the Feed override to change feed rate on the fly while cutting, also play with spindle rpm has well.
By doing this you'll find the sweet spot quicker and get the best finish and tool wear.