Quote Originally Posted by Washout View Post
Anyway after resetting and cutting a bunch of holes to finish the bed without mishap, I have just "air cut" my first 3D part and it seemed to work OK. I do have another question though:

I'm using GWizard to help with feeds and speeds and for the drilling operations and counterbores the 18,000rpm, 750mm/min feed and 515 plunge rate GWizard suggested seemed to work really well. For the 3D roughing operation I'm about to try I'm using an 8mm Carbide End mill (3flute) and it is suggesting 13,000rpm, 2,000 mm/min and 750 plunge - does this sound right guys, as it seems to be very aggressive?
Can't answer really without knowing material, DOC.

Warning thou regards G-wizzard.? The calcs are based on using a milling machine which is much stronger than what you'll probably be using so I'd always knock a bit off to account for this.! How much mostly depends on your machine but 25% would be a good safe start.