I'm going to order endmills for aluminum cutting and facing and looking for a good finish. So far with a used unknown HSS 2-flute bit I can get decent results in 6061-T6 (which will be the material I'd use). My mill is a CNC'd HF geared head benchtop mill (a bit bigger than an X3), 1500rpm max.
So far I've figured out, learned, deduced, and decided I need 2-flute, un-coated HSS, high-helix angle, centercutting. I'll probably get roughers and finishing endmills. But how do I know the difference between one manufacturer's endmills and the other? Is there any other spec I should be looking for, or enquiring about? In other words, should I get the on-sale ones at Enco or Discount Tools, or should I be looking at Seco, Kennametal, Dataflute etc? I know not to get the HF ones. And how would I know that they do what they say? I'm not a production shop, but will be doing my prototypes and one-offs for customers so it'll be very low volume, so not sure that the big names would even want to speak with me.
Finally, what sources are good for these endmills? I know of Enco, MSC, Discount Tools and American carbide, but haven't found some specific types yet (such as bevel-cutting bits).
Any info appreciated. Thanks,
-Neil.