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Unusual clamps, any ideas?

jimhanna

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Jim Hanna
I’ve recently acquired a couple of clamps which have confused me. I’d be grateful for any insight as to original purpose.

funny clamps2.jpg

They’re a couple of almost mirror image aluminium clamps marked L and R.

I don’t think they’re any sort of bespoke industrial assembly clamp, they seem too lightweight for that. The brand is definitely Wolfcraft and the only products I’ve ever seen from them are for carpenters and joiners.
logo.jpg


When I first saw them the movable stop on the one marked R made me think they’re for setting overlapping drawer fronts.

But there are a few other curious aspects to them.

The red lines on the diagram below represent how I think they might be used for aligning drawer fronts, the drawer box and the front are the two red parallel lines at the 50mm capacity clamp and the single red line would be the drawer side with the 30mm capacity clamp. The cut-out at the red arrow could be used for fixing the front to the drawer box.

ideas.png


Problem with this is the orientation. I set the one marked R into the right front side of one of my workshop drawers which has an overlapping front and this would put the 50mm clamp at the side and the 30mm clamp at the front. It fitted my drawer which is a 12mm box and 9mm front but I would have expected the large clamp to hold the two front elements of the drawer and the side to be the smaller clamp.
set into drawer.jpg



The various cut-outs in the frame could be to locate connector bolts in adjoining cabinets.

The larger 60mm capacity clamps, marked with the green triangle in the pic above would seem to have no purpose in drawer alignment. They would be very lightweight compared to a standard cast iron G clamp so I’m not sure they would be useful as ordinary clamps.



I’d said they were almost mirrored clamps. Two of the sides have a step cast into them towards the clamp.

stepped sides.jpg



Even more unusual is that the steps aren’t the same size, putting a rule across shows one is distinctly lower than the other. I have absolutely no idea how this could be used.

The lines marked across are at 10mm intervals.

offset offsets.jpg

I did try various image searches for kitchen fitters clamps, cabinet makers clamps but saw nothing similar.
Then I asked AI

Q All-in-one frame clamp pair for overlapping drawer front, connector screws and hinge location in kitchen cabinets. The pair of clamps have mirrored left and right configurations.

The reply seemed to suggest it had seen something similar elsewhere.

A The tool set you are referring to describes a specialized hybrid category of All-in-One Cabinetry Jigs / Face Frame Clamps that pull triple-duty during kitchen cabinet assembly. Specifically, you are describing a mirrored left/right pair of heavy-duty frame-alignment clamps.


But it couldn’t produce any pictures of the sort of clamp it was describing.

It’s a mystery to me, I’ll be able to use them for aligning overlapping drawer fronts but it would be nice to know a fuller history.
 
I might be wrong here, because this is from a *very* long time ago, but these photo's make remember the old corner clamps they used when I still lived in Germany. Just plain corner clamps. The 3rd screw was to fix them to a table or something like that. So, you might be overthinking what they are. But then again, I don't have an answer as to what the steps are for. So, I might just as well be the one that's off here...
 
I've had a bit of a look but not found anything. But they are a long-established company with a history of making many ingenious devices.

I suggest you email them and ask if they can remember!

 
The 3rd screw was to fix them to a table or something like that
I tried clamping them to a tabletop (a workmate) in L and R orientation. I think you have hit on something.
The steps give a clamping surface on each side at the same height to allow a board to be clamped.
20260706_221356.jpg

At first I thought this is a modern interpretation of a Moxon vice, holding boards for dovetail marking out.

But the horizontal and vertical boards don’t align, there is a distinct offset.
Just a couple of bits of T&G cladding but they show the offset between horizontal and vertical.

20260706_221755.jpg
20260706_222345.jpg
suggest you email them and ask if they can remember!
I’ll certainly mail Wolfcraft, be interesting to see if they reply.
 
Could it be for routing box(finger) joints? The width of the offset equals the width of a gap or a finger, so by offsetting you can rout all the gaps at once.
 
wolfcraft-4270-dovetailer-jig-routers_360_56a5f1caa80a1092fc9ca2532c886910.jpg


 
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