Pietenpol-List: Unwarping plywood nose blocks -- opinions needed

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matronics
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Pietenpol-List: Unwarping plywood nose blocks -- opinions needed

Post by matronics »

Original Posted By: LaurenMWilliams(at)webtv.net (Lauren Williams)
Folks,I need your informed opinions about something.In the Fall of '98 I made a template and routed out all the rib nose blocksfor my Wagabond project. They are of 1/4 inch aircraft plywood. I then gotoccupied with other things, so stored the finished nose blocks flat in acardboard box in an unheated area, but up off the concrete slab.Just after this past Christmas I finally found time to get started buildingribs, only to discover that 18 of my nose blocks are somewhat warped. Ithought about just tossing them out, getting more plywood and routing a newbatch, but I didn't want to spend the money on more plywood if I can savethese. Here is what I thought of doing.Layer up 5 or 6 nose blocks in a big sandwich, alternating with damp (notsoaking wet) paper towel between them and clamping the whole sandwichbetween two blocks of 3/4 inch plywood. The company where I work has lots of3/4 inch oak veneer plywood scrap, and it's furniture-grade wood (no voids)and is tough stuff, not the crap you get at Mr. Plywood.Then I'd build a baking box out of a cardboard box with a muffin fan in oneend and a couple of 75-watt bulbs inside, with an air exit on the other end.Cook the clamped sandwich in the box at whatever temperature it reaches(hopefully around 200 degrees) for a week or so and unclamp it.Anyone think this will work to straighten out the nose blocks, or am I justSOL? Any other ideas for straightening these blocks?Thanks,Mike________________________________________________________________________________
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