How to flatten warped plywood

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Croker
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How to flatten warped plywood

Post by Croker » Sun Mar 15, 2020 3:17 pm

Hi, I am working on a project using 9mm plywood. I've cut the bits to the correct shape & size but yesterday noticed that they are both quite badly warped.

Laid both sheets flat on the floor overnight with heavy weights on them but it doesn't seem to have done any good. The two sheets are approx. 4ft x 2ft in size (each).

Are there any tricks of the trade I can use to flatten the sheets?

Many thanks
dewaltdisney
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How to flatten warped plywood

Post by dewaltdisney » Sun Mar 15, 2020 3:22 pm

A narrow chock under each end and weigh the middle down. You will cause an overbend but it should cure the memory spring back.

DWD
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Croker (Sun Mar 15, 2020 3:33 pm)
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Croker
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How to flatten warped plywood

Post by Croker » Sun Mar 15, 2020 3:35 pm

Brilliant!

DWD to the rescue, and not for the first time either. I am very grateful :salute:

Will do exactly as you've suggested and leave them again overnight.

Again, many thanks!
Croker
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How to flatten warped plywood

Post by Croker » Sat Mar 21, 2020 5:17 pm

Update... your tip has worked nicely DWD

Unfortunately what I thought was going to be a fairly simple exercise has turned into 'one of those' jobs... however, at least I've got time to work on it thanks to Coronavirus!
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dewaltdisney (Sat Mar 21, 2020 5:48 pm)
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