- Joined
- Feb 9, 2017
- Messages
- 5,592
it is a very deep subject. Luckily I found a good website somewhere that ran down the different angles for different metals. So for cutting mild steel I use 5deg on the cutting edge of the end mill and 1deg of relief. I believe that’s what they call where the end are dished in the middle. Terminology has always tripped me up.Tool and cutter grinding is a deep subject.
The thing the SO type and Kuorn don’t have and maybe the other T&C(certainly the monoset does) is an air bearing for grinding the flutes of end mills and and reamers. I was told it was impossible without it. The attachment for doing flutes on my Checkel was so sloppy it was crazy but I managed to cut down the flutes of random dull 8mm end mill I had to make a 5/16” out of it for some project I was doing. I tried rebushing the Checkel attachment to slide and have decent clearance but as soon as I started grinding and the inevitable dust got on it, even with seals it was a mess. I then bumped into a real air bearing and added it to the arsenal. It’s insane how good that works! And never gets fouled by the grinder dust. And before you go thinking “why not just add a air fitting and inject some air between the bushing?” Ain’t gonna work. Air bearings are also a REALLY deep subject.