Reply by gwilki

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Posted on Necessary to veneer both sides of a 1-1/2” thick laminated plywood substrate?

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359 posts in 2360 days

#1 posted 10-12-2018 07:10 PM

I don’t have an answer, but I hope you don’t mind a question for all of those who say that you need to veneer the bottom.

Since the top is made up of two sheets of plywood, what is the difference between a piece of veneer that the OP would add and the outer “veneer” or ply on the sheet of plywood in terms of how moisture will affect the piece?

I’m not arguing one way or another, and I am not a professional by any stretch of the imagination, but I really would like to understand this. The outer ply on the plywood is really just a sheet of veneer, is it not? It may be a bit thicker than some veneer, but other than that, it’s just a thin layer of wood, just as veneer is. So, why would adding another piece of veneer to the plywood substantially change the way it is affected by humidity?

-- Grant Wilkinson, Ottawa ON

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