- Joined
- Feb 17, 2013
- Messages
- 4,403
Here's what looks like some kind of milling cutter or counterbore. It was mixed in with a bunch of cutters and other stuff I got a couple years ago. Both or them were in wax when I got 'em.
There are 5 cutting edges on the face. A 1/4" hole extends through the cutter (possibly for a guide pin?) and through the cutting face. Note that the flutes are only sharpened along the last ~1/4" next to the face, and that they are tapered a bit. Not easy to see in the photos, but there's a radius, about 1/32", between the side and face edges. The hexagon is 1/2" across the flats, and the shank between the hex and the spiral flutes is slightly tapered - not suitable for a collet!
How the heck this is supposed to be held in a machine tool is a puzzler. And though it does resemble a counterbore, it looks kinda large for use with a 1/4" guide pin. Spotface cutter??? But again, how would it be held?
There are 5 cutting edges on the face. A 1/4" hole extends through the cutter (possibly for a guide pin?) and through the cutting face. Note that the flutes are only sharpened along the last ~1/4" next to the face, and that they are tapered a bit. Not easy to see in the photos, but there's a radius, about 1/32", between the side and face edges. The hexagon is 1/2" across the flats, and the shank between the hex and the spiral flutes is slightly tapered - not suitable for a collet!
How the heck this is supposed to be held in a machine tool is a puzzler. And though it does resemble a counterbore, it looks kinda large for use with a 1/4" guide pin. Spotface cutter??? But again, how would it be held?