Reply by BinghamtonEd

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Posted on Running knotty cedar through planer?

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2297 posts in 2338 days

#1 posted 01-11-2013 07:59 PM

I know some people shape/bow their cauls to make sure they have good pressure in the middle, however I personally just use straight cauls. I suppose if you want, a couple swipes of the hand plane focused towards the ends would work. I’ve found that as long as you’ve prepped the boards well, and are not trying to force things to be flat at the time of glue up, but instead just trying to keep them aligned, the straight cauls work fine. I put one set at either end of the panel, and depending on length, maybe one or two sets somewhere in the middle.

Instead of putting wax paper right on the panel, just wrap a piece around each caul and put a piece or two of masking tape around it to hold it on. That way when you’re gluing up you’re not worrying about it. You’re right about alternating the clamps. You may want to put some wax paper over the pipes of the clamps. The first time I did a panel, I used black coated pipes clamps, and some of the black coating ran into the boards.

Just get all the clamps set up ahead of time, put your boards in, tighten them down just enough so they’re pushed together, then put the cauls on semi-loose, then tighten your pipe clamps and then caul clamps.

I’m sure there are other ways people here do it, I’ve just found (in my limited experience of maybe 10 panels) that this works the best for me.

-- - The mightiest oak in the forest is just a little nut that held its ground.

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