I'm cutting some deep pockets in aluminum with my 770. 3/8 end mill, I have a 2 flute HSS or a carbide 3 flute.
1.250 deep, .750 wide by around 3.0 long pocket, also has some bump outs and various depths. I have around 15 or so parts to do
I finished one but it was rough, took for ever, chips packing up, end mill crying for help, bad vibrations. I tried different speeds and feeds
But nothing really worked well, I'm taking around .125 deep cuts at full diameter, maybe it's too much, flood coolant on, chip brush in hand
Fighting chips.
Any suggestions on speeds and feeds. My end mills are both brand new, I haven't tried the carbide yet, it's a nice 3 flute high helix designated for aluminum, looks pretty bad ass. My HSS end mill is also for aluminum.
Thanks
Joe