Gunsmithing conventional mill cutter speed for stock inletting

[chpprguy]

I have a molded in camo McMillan that I would like to open up for DBM.
Those that have done it, what cutter speed did you find minimized chipping?
Did the flute count matter?

thanks in advance,
Andy

 

[crashandburn]

Re: conventional mill cutter speed for stock inletting

I used a 3/8 4 Flute Carbide End mill with an extended shank and ran it about 1000rpms (could go faster), worked fine. Just don't run your feed too fast.

My 2 cents

 

[Straight Shooter]

Re: conventional mill cutter speed for stock inletting

I use whatever is handy. 2 or 4 flute fron 1/4" to 1" depending on the radious I need. Speeds are from 1000-3000. The faster speeds allows the feed rates to be increased. Never had any problem with chipping. They always cut really smooth.

 

[WhiteDingo]

Re: conventional mill cutter speed for stock inletting

Just be aware the fiberglass will wear your High Speed endmills down really quick.

I usually use a 3/8" carbine for the action area; up to 7/8" if I'm opening up the magazine well.

 

[chpprguy]

Re: conventional mill cutter speed for stock inletting

Thanks everyone....
I'll give it a whirl...