SHARPRO6mm Shank 5mm Cutting Dia. Carbide Square End Mill 2 Flute AlCrN Coated CNC Milling Bit, Apply for Alloy Steel, Stainless Steel, Cast Iron and Aluminum Cutting

I am using this on my homemade CNC mill and it is very sharp. It has been cutting very smooth. It fits well in the collet with no issues. It's been used for many hours and has held up well!

Nice end mill bit making perfect cuts. If you can catch the current sale, it is half off, so definitely a deal.

I used this bit last weekend on a very expensive piece of acrylic, and Mama Mia! it cut like a hot knife through butter!I usually default to a single "o" flute, but My buddy promised me that I'd be more pleased with the 2 flute, so I tried it.The edge was amazing, and there was almost no chatter.I decided to give it a try on some 3/4" on My mini CNC mill, and I made 2 perfect partsm before I think I got a little greedy, and snapped it.That's My fault... I was just so impressed, that I kept pushing it harder. I should have known that would happen!These are extremely sharp! Much sharper than some of the usual suspects. I'm pleased as punch with the price / performance ratio!

Worked perfect for aluminum and struggled a bit on steel. As long as you are feeding slowly this will work just fine for aluminum, brass and mild steel.

I've burned out too many small HSS endmills with the necessary rpm for a good surface finish, and so I don't break the tiny things by feeding faster than they can cut, so I finally made the jump to carbide tooling. I'm not doing CNC stuff, just manual milling on a 70 year old knee mill without integral cooling fluid, so I'm not pushing this endmill to its limit. I mostly work with aluminum and mild steel, so the move to carbide is more about the speed and maintaning sharpness than cutting difficult materials.For my purposes, which is essentially heat tolerance for this item, it has worked exactly as I had hoped.