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Oak board bow repaired

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Forum topic by Nomad62 posted 02-18-2014 05:53 PM 750 views 0 times favorited 1 reply Add to Favorites Watch
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Nomad62

726 posts in 2424 days


02-18-2014 05:53 PM

Topic tags/keywords: tip

Hi all, just figured I’d share a little piece of success. I was making a large mirror frame out of 3/4 red oak, and after moulding the face and taking it home one of the pieces bowed 1/4” (at the center). The other 3 were just fine. In mind of my attempts at making wood long bows, which take a “set”, or permanent bend, after being drawn several times, I decided to put in a controlled set into this piece. I got a stick of ash 6’ long and 2”x3”, put a spray can in the middle, then laid the oak piece on the other side of the can and used my bar clamps to pull back on each end of the oak against the strength of the ash. I bent it back to a reversed 1” bow and let it set for 12 hours; no change at all. Same thing at 2”, then 2 1/2”. At 3” the can started to crush, so I used a piece of 4×4 standing up instead; the piece came off that set-up with a 1/8” set, but rebent itself back overnight to about a 1/8” bow in its previous direction… a little success… so I bent it 3 1/2”, again 12 hours, and it came off with about 1/4” set. Overnight it rebent itself to a nice, straight line! 2 days went by, it’s still nice and straight. So I finished the milling I had to do on it and glued ‘er up, all’s good! Hope this helps someone out there someday.

-- Power tools put us ahead of the monkeys


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Mark Shymanski

5314 posts in 3178 days


#1 posted 04-16-2014 12:04 AM

A bit of heat can also make bending wood more predictable.

-- "Checking for square? What madness is this! The cabinet is square because I will it to be so!" Jeremy Greiner LJ Topic#20953 2011 Feb 2

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