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Crab Clamp

Lee Celtic

Well-known member
Joined
Jul 1, 2016
Messages
336
Location
Llanberis, North Wales UK
Ok so I don't know what you guys consider as Vintage.. this clamp was invented and made almost exactly 30 years ago..Hope thats old enough..

A small engineering company called Turton Engineering started making them in 1986 and as a student I was lucky enough to be able to visit the Cabinet Maker show at Alexandra Palace in London the same year.. Unfortunately the firm dissolved a few years later and the Crab Clamp was no more.

I actually met the designer and took a chance by buying one at a cost of £19. (a year later I was earning £30 a week so it was expensive)

I used it for years as it was so handy around the workshop.. the design has more to it than meets the eye.. The 7" opening cantilever helps to apply a lot of pressure to the work piece through the revolving jaws. The jaws themselves are special too, they revolve on a pin giving four different surfaces for clamping . they can be configured to grip pipe side by side either in line or across the clamp and also clamp two pipes at 90 degrees using small V's cut into the jaws for welding. One face of each jaw has a small hole for a soft jaw insert.

The only thing that let the thing down was the power coating.. if it chipped the rest rusted off in weeks.

The one I owned had an engine block fall on it bending it a little so it didn't function but today I found a replacement I can now copy for my own use. Whats more is I got it for 50 pence as the seller didn't know what he had.
 

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dutchgray

Well-known member
Joined
Sep 28, 2014
Messages
6,469
Location
Dorset. England.
The Americans have Kant Twist clamps which are pretty much the same but with the advantage that they still make them. Nice clamp though and if I saw one at a boot sale I would buy it.
 

Bdgjr215

Well-known member
Joined
Oct 21, 2015
Messages
760
They look like kant twist clamps.my dad is a retired machinist and has them in abunch of different sizes
 

nickelmore

Well-known member
Joined
Apr 27, 2015
Messages
319
Location
50 miles from Chicago
Yep those are cool, I have one or two floating around. I dont remember being that big, I liked using them on the workbench.

Now I have to think where I saw them.
 
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jakemac

Well-known member
Joined
May 21, 2013
Messages
9,035
Location
New England
I never knew about these until I joined this site. Since I learned about the Kant-Twist clamps I've been periodically finding them at estate sales. I now have a 5gal bucket full in various sizes from 1" to 6" that I've only paid pennies on the dollar. These clamps ain't cheap, but they do a good job.

Only about half have been cleaned up so far.
1", 2", 3", 4-1/2", 6"
 

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jakemac

Well-known member
Joined
May 21, 2013
Messages
9,035
Location
New England
I thought the same thing in my area, but for some reason they seemed to pop up like weeds for me this year. I probably won't see another one ever again. I'm certainly not complaining.

There are videos on the internet somewhere of guys showing how they build their own.
Google " diy kant twist clamp ".
 
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