Fun with an Annular Cutter

[Stepside]

The other day my neighbor came over with a problem. He needed some washers with one face tilted 12 degrees. The constraints are 8mm bore and an outer diameter the same as the nut.

The bore of the 1 inch RotaBroach was the desired outer diameter as the washer. I drilled the 8mm hole before using the Annular cutter.

[LKeithR]

Very neat idea. I love annular cutters--for a lot of reasons...

[Tundra Twin Track]

They are amazing cutters,did similar to repair a 1-1/4” shaft on roller that would not fit in my lathe.The cut ended up 1-1/8” used same series of bearing but smaller bore,like new again.

[Doozer]

I made some silver dollars cut at 12° once.
12 of them in fact. They were throttle butterfly ellipses
for a Ford 2.5 or 3.0L V-6 for the resonant runner control.

-Doozer

[old mart]

Rod and I used an annular cutter with a stepped pilot to remove some brazed in bushes from some vintage girder motorcycle forks. The cutter/ pilot was in the lathe chuck and a guide was in the tailstock. We used the backgear and plenty of soluble oil and the bores lined up perfectly and were just right for new bushes to be loctited in place. He recons the handling of the bike improved noticably.

[Peter.]

If you have a lightweight milling machine they make wicked face mills. I use them often for milling a nice face on a part.

[Doozer]

I did not know the cutter relief angles were such to allow side milling.
Seems to me if it would indeed work, depth of cut would be only .005
or .010" at most, and it might dull the edges quick. But I dunno,

-D

[epicfail48]

If you have a lightweight milling machine they make wicked face mills. I use them often for milling a nice face on a part.

Really? Wouldntve expected that, surprised that they do side-cutting at all. Think id still prefer getting a small face mill though, not too much price difference between a 2" mill and an annular cutter the same size

[JRouche]

If you have a lightweight milling machine they make wicked face mills. I use them often for milling a nice face on a part.

Well on that account a concrete core saw would also work well as a face mill. And yes, you would be correct.

The profile of the carbide bits are almost perfect for heavy cutting of hard metal.

I wound not do either methods. Not with a concrete core drill or with my nice cutters (they eat steel like butter in the mag drill).

Some times, you just gotta do with what you have. JR

[Dan Dubeau]

Threads like this are one of the best things about this site. If my neighbor asked me to make the same thing I would have ended up at the same spot, but taken a completely different route to get there. As would others here. Based on many factors from available stock, to available machines and experience. Each way would be right, just different. The sharing of ideas, and methods of machining is what makes this site great, and the trade grow as a whole. Thanks for sharing.

[Peter.]

Well on that account a concrete core saw would also work well as a face mill. And yes, you would be correct.

The profile of the carbide bits are almost perfect for heavy cutting of hard metal.

I wound not do either methods. Not with a concrete core drill or with my nice cutters (they eat steel like butter in the mag drill).

Some times, you just gotta do with what you have. JR

Lol, well since concrete cutting has been my trade for 30 years I'd have to disagree with you completely on that one.

What can I say, I have a collection of annular cutters discarded from work as blunt which I have re-sharpened and I often use them for milling surfaces. They cut smoothly and effortlessly but as mentioned above, not with much depth of cut.

[ftownroe]

Damned clever

[JRouche]

hat can I say, I have a collection of annular cutters discarded from work as blunt which I have re-sharpened and I often use them for milling surfaces. They cut smoothly and effortlessly but as mentioned above, not with much depth of cut.

Very nice! I do like the cutters.

You found a whole bunch? Can I have some? I like them. JR

[Paul Alciatore]

I am sure I would have taken a different course. And it probably would have been a lot harder. That's why I like reading how others have done things. I learn a lot here.

Thanks Sidestep!

Threads like this are one of the best things about this site. If my neighbor asked me to make the same thing I would have ended up at the same spot, but taken a completely different route to get there. As would others here. Based on many factors from available stock, to available machines and experience. Each way would be right, just different. The sharing of ideas, and methods of machining is what makes this site great, and the trade grow as a whole. Thanks for sharing.