Reply by GregD

  • Advertise with us

Posted on Warped Plywood Cabinet Carcass - Help!

View GregD's profile


788 posts in 3333 days

#1 posted 06-23-2016 06:56 PM

Well, plywood does bend and warp a bit. It is usually not a problem with plywood cabinets, because of the joinery that holds everything together. Rails and face frames ensure that everything is flat and square in the end.

I wouldn t mess with the water / sun business to flatten it. Just use joinery that forces is flat. I typically use dados and rabbets for the case, and attach the face frame with biscuits.

I guess if you were planning to build a frameless cabinet you would be in trouble, but with a faceframe I think you ll be fine.

- pintodeluxe


Installation is another opportunity to pull things into (or out of) square.

There was a time it seemed that only the cheapest grades of plywood would curl like that. And then for a time I could find domestically produced plywood that rarely had that problem although at 1.5X to 2X the cost of the imported stuff. More recently I can’t find any plywood that doesn’t curl like that with some frequency. The problem seems to trace back to a ply layer where adjoining pieces overlap. Better to have voids, IMHO, but you typically don’t get a choice.

The bottom line is that the only way you can ensure that a plywood is going to be flat & square is to build it into a structure that forces it to be flat and square.

-- Greg D.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics