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What to do with warped plywood?

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What to do with warped plywood?

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Old 04-30-2010, 10:54 PM
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stangevil29
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Default What to do with warped plywood?

To all,
I recently cleaned out one of the corners of the hangar/garage and found a stash of plywood sheets I had forgotten about. They range from 1/16 to 1/4" and all are warped pretty bad. The 1/16 looks like it was wrapped around a damn coke can. Anyway, whats the best way to go about trying to get them flat again? Or is their one? Thanks in advance.
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Old 04-30-2010, 11:41 PM
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huck1199
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Default RE: What to do with warped plywood?

You might try amonia and water solution; soak and weight it down for a week. It might hurt the laminating glue though. If no one comes up with a sure fire way this may work.  Sounds like you have nothing to lose.
Old 05-01-2010, 06:50 AM
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Default RE: What to do with warped plywood?

The ammonia/water solution works quite well - had the same problem with some 1/16" and 1/8" awhile back and they came out fine. Soaked both sizes for something short of a week, then laid them out and weighted them down HEAVILY for a couple weeks until they were dry again. No problems, and they were flat as an Ohio field.

Dave
Old 05-01-2010, 02:24 PM
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stangevil29
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Default RE: What to do with warped plywood?

OK, Ill have to give a try. What kind of mix ratio do you suggest? Thanks
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Old 05-03-2010, 01:14 PM
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Default RE: What to do with warped plywood?

ive found that aircraft ply is almost impossible to straighten. once it warpes too far . woodchipper?

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