Originally Posted by
3Dsigns
Oh yeah
I've never machined anything like this before....would a spiral endmill be best?
Use a standard center cutting 1/4" end mill made for cutting aluminum, keep the rpm as low as you can reasonably get it, and spray a shot of WD40 on it occasionally to keep the aluminum from sticking to the cutter. It will gall if the rpm is too high. Practice on some scrap aluminum of the same type before committing to a 'real part' cutting session.
CarveOne
CarveOne
http://www.carveonecncwoodcraft.com