Reply by ArtMann

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Posted on Homemade clamps to glue wood panels?

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1385 posts in 1210 days

#1 posted 08-04-2017 02:43 PM

I see several problems with the design as it is built. The first one is the whole thing is flimsy. I like more clamping pressure than that setup can apply. Another thing is these clamps are not applying uniform pressure to the boards. For a glue-up that is as long as the one in the link, I would use at least 4 or 5 clamps instead of 2.

The basic idea is a pretty good approach if it is modified. First, use 2X4s instead of thin strips. Abandon the pivoting blocks and make the clamps square instead. Glue and screw the end blocks so they will have no tendency to flex or twist. Use a pair of opposing wedges on one end of the clamp to apply pressure head on instead of at an angle. Finally, use several of them since even beefed up clamps of this type aren’t as strong as Bessey clamps or similar. I use the dual wedge approach all the time to clamp work pieces to my CNC router table. I hope this makes sense!

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