I have found that if I use a 2.4mm diameter double fluted cutter and cut 0.5mm depth at a time, I can get a nice cut which doesn't need a lot of cleaning up.
If you can find four flute cutters to fit your collets, you'll find them much more robust than two flute. Or... If the collets will take 6mm shanks, you have a wide choice of three flute disposable carbide cutters that can be run at 7-10,000RPM.
Thanks. I can only fit 1/8" shank cutters into our machine (Excellon). I did find a company selling a 3/32" cutter with an 1/8" shank suuitable for cutting metal so I might try one of those.
Steve.
Last edited by Steve Smith; 05-15-2012 at 01:09 PM. Click to view previous post history.
I might have some 1/8" shank solid carbide cutters (four flute), if not I can put you in touch with a UK supplier. Ping me in a day or so if I haven't gotten back (doing the night shift tonight).