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K&M Turner with 21st century mandrels

BeefyT11

Silver $$ Contributor
I have and like the 21st century expanders and am now looking to add a neck turner that uses their turning mandrels. I really like the features and accessories the k&m has. Will the k & m Turner work with the 21st century mandrels? They have a 3/8 shank
 
Yes. But with that being said, I use the 21st Century expander with the 21st Century mandrel/turner. The same with the K&M.
 
NO! Well __Maybe w/ 500000lbs of presure

THE 21ST CENTURY SHOOTING ARBORS will NOT! fit in the K&M Neck turning tool
John
 
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My K&M turner is hand held. I can expand with either mandrel and then trim with either my 21st Century lathe or K&M turner.
 
Sounds like it's a 21st century neck turner for me then. Still looks like an awesome product. Now I just need to sell the Forster kit I'm running now...
 
Sounds like it's a 21st century neck turner for me then. Still looks like an awesome product. Now I just need to sell the Forster kit I'm running now...
The Forster will come in handy. You can use it to make initial passes and it will keep you from having to move your final cutter.
 
How do you get 3/8" which is 12/32 in a 11/32" hole ?
I said my k&m shank is 11/32. Didn't measure the hole. I don't think it's a tight fit, there is an allen pin to hold it in the spot.

I also bought a "3/8" arbor depth gauge non-k&m and it fits fine on the side hole.

Edit: We'll.. you are right, the 3/8" depth gauge does not even come close to fitting the pilot hole.
 
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Thought i was wrong once back in the 50's;Sadly i was Mistaken.
I said my k&m shank is 11/32. Didn't measure the hole. I don't think it's a tight fit, there is an allen pin to hold it in the spot.

I also bought a "3/8" arbor depth gauge non-k&m and it fits fine on the side hole.

Edit: We'll.. you are right, the 3/8" depth gauge does not even come close to fitting the pilot hole.

Thought i was Wrong once back in the 50's;Sadly i was Mistaken. lol ,the side is for a Micrometer,sure be nice if they were All the same size,the sinclair mandrells won't fit the K & M either
 
From their site: “I use a Hitachi 12 volt cordless driver drill. DS100FL. Light weight 2.2lbs, 2 speed with a li-ion battery”.

Actually I have a lithium ion Hitachi. Better battery life.
 
Thought i was wrong once back in the 50's;Sadly i was Mistaken.


Thought i was Wrong once back in the 50's;Sadly i was Mistaken. lol ,the side is for a Micrometer,sure be nice if they were All the same size,the sinclair mandrells won't fit the K & M either

I too find it hard to be humble when I'm so great!
 
The 21st Century looks nice and if I ever upgraded I would probably go that way. You can add a couple accessories to the K&M to make it easier to use. The mandrel jack makes it easy to set the depth of the cut. A dab of paint on the threads makes it stay in place but still easy to turn.
K&M.jpg
 
I have that exact same depth gauge on mine. And while I have the carbide cutting pilot mandrel, I still find it cuts smoother and more accurate with some one-shot on the neck.... Noticeably better!
 

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