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Trestle Table #6: Complete Cambered Cauls

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Blog entry by HappyHowie posted 09-04-2016 10:29 PM 769 reads 0 times favorited 2 comments Add to Favorites Watch
« Part 5: Cambered Cauls Part 6 of Trestle Table series Part 7: Mortise Plunge Router JIGs »

After using my planer yesterday to cut the cambered ends, I drilled holes two inches in from the ends of each caul. I selected a 3/8” drill bit in order to easily fit the 5/16 diameter bolts I purchased yesterday. Besides laying the bolt on my bench and testing the thickness of a 5/16” and a 3/8” drill bit along side the bolt, I also drilled a test hole in a scrap board. I selected my 3/8 inch drill bit for my cambered cauls.

After marking a line two inches in from each end, I also used my combination square to determine and mark the halfway mark on the cambered edge. I pushed a starter hole with my scratch awl used that to drill a long 1/8” diameter hole through each caul. I used a drill guide to make sure the long drill bit stayed straight through the 3 inch thick caul. This way if my 3/8 drill bit did not punch through the caul I would have a good mark on the opposite side in order to complete the drill hole. As it turned out by mounting the drill bit long enough in my drill press I was able to physically lift the caul to complete the drill hole, punching it through the opposite side.

With all holes drilled, I used a rag to rub paste wax on all surfaces and ends of the cauls.

I have to admit that drilling 32 holes in each end of these cauls became tiresome work, but I stayed on the task. Now I have three set of six cauls measuring 28 inches, 38 inches and 44 inches so I can glue dead flat table tops of 24, 30, and 36 inches wide.

The 8 inch long 5/16 inch bolts will be used to keep the approximately 30 inch wide glue up of the table top flat. I have used Bowclamp’s cambered cauls for a dresser top. That was not as wide a project as this one. I suspect I will have at least 30 inch wide table top to glue. I will trim it to final dimension of 27 inches later in this trestle table project.

My next step will be to glue up my table top. Stay tuned for a review on how well tese caul work for that glue up.

-- --- Happy Howie



2 comments so far

View NormG's profile

NormG

5506 posts in 2469 days


#1 posted 09-05-2016 01:24 AM

Well done, I am sure they will be very useful in glue ups

-- Norman - I never never make a mistake, I just change the design.

View HappyHowie's profile

HappyHowie

328 posts in 1410 days


#2 posted 09-05-2016 03:50 AM

Thanks. I write here in this on how well it went. That should be in a day or two.

-- --- Happy Howie

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