I think I have got the hang of Cambam now with wood, and I'm not to bad with Mach3. I wanted to do a test on a small piece of Aluminium 8mm thick. 1mm @ 550mm/min 12-13K , Feed plunge +30 (4mm single face endmill) and Z zero set. First I used one of the pocketing wizards in Mach.
When I pressed the cycle start on Mach3, the endmill plunged hard into the alu , it seemed far to hard, so I pulled the Z up, and inspected the piece. Very rough circular hole, 1mm deep. Doesnt seem like it wanted to cut at all. What am I doing wrong here ?
Another thing. In cambam it asks for plunge feedrate. What should this be set to for alu ?