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External Jaws for a 3 jaw

MashingMetal

MashingMetal

Active Member
Last weekend I picked up a 10” 3 solid jaw Cushman that fits my Colchester with the L1. Of course no external jaws with it. There is a set on fleebay which would work out to $100 Canadian to my door. I know with a 10” they won’t get used much and I do have a big 4 jaw. Convince me one way or another please.

Thanks! Mark
 

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If they are for the same chuck then the scroll should match.
Personally I would want outside jaws. I know I've used mine a fair bit.
 
MrWhoopee said:
^^^This^^^

If you have actually found the orphaned jaws to fit your chuck, you should not only buy them, you should also buy a lottery ticket.
Click to expand...

I know, Been looking for Jaws for my jawless Rohm chuck 20 years, i am not spending $700.
I have 3 sets of orphans here, two are Asian external, 6” if anyone is interested in me measuring?
 
How hard are your existing jaws? If you can, think about drilling and tapping them for some custom add-on external jaws you make yourself.

Mine are reversible, so it's basically the same thing. Then you can turn the new jaws in place so they are centered properly.
 
They feel like they have to be the high 50’s Rockwell. My chuck is their heavy duty series what ever that means. I am sure Cushman has the specs somewhere. Probably carbide would be the only thing to touch it. Good idea if it was Asian I would go for it.
 
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