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Posted on Clamping Cauls

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2544 posts in 2934 days

#1 posted 04-03-2013 12:49 AM

I’ve seen them commercially available made from ash – really expensive. I made some from scots pine and tested them by seeing if glue applied by roller squeezed out evenly in a trial glue up. After a few attempts, 3/8 was the crown that worked best. Used a drawing program to create the arc, printed it off in sections and stuck it down on mdf to make a master template for use on the router table. It’s worth marking a C where the clamps go and covering in tape on glue side.
The squeezout test was not very scientific, but they work really well. If it gives you an idea of the force they can apply along their length, you wouldn’t be able to bring together the unclamped ends by hand, not unless you were Hulk Hogan.

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