3/4" Straight Shaft Fly Cutter

As you wish, my friend.

The body is about 1 1/2" thick, so I expect it to be pretty stable. As mentioned, the slot is 5/8". I'm planning on adding a setscrew at the cutting end to set the angle of the bit. He cut the slot with no angle.

The parallax seems to take the taper out and make the shaft look straight. It is actually an MT3.

I sure miss the ability to put the photos where I want them. It was so nice to have the caption above the referenced picture. Can't even see them in the post as you write it any more.

P9030621a.jpg P9030622a.jpg
 
Thanks! thats a big one alright. surprised the slot was milled parallel to the top and not angled. was it ever used this way?
 
Two of the setscrews show a bit of use, but the one closest to the cutting end of the slot doesn't look like it had been tightened, so I can't say if it ever saw use. The machine shop hadn't been used for about 12 years and the owner died a couple of years ago. There was no one around who knew much about the place.

Taking a good look at the fly-cutter, he put the setscrews on the 'short' side of the disk, meaning that they take all the strain on the bit. I think I'd have drilled and tapped the 'long' side, so that the side of the groove was taking the strain on the bit. I might do that anyway.
 
Good Job! One thing you could do to improve the knurl would be to make a fine cut on the knurl and knurl it again.
The diameter of the material has to match the knurl in order to get a definite clear knurl. I suppose one could do the
math and figure out exactly what diameter is the best. If I get a marginal knurl, I just face it off lightly and usually the second time
around, the knurl is much better. I will have to make a shallow angle knurl and see how it performs as your surfaces
look really exceptional!
 
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