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Maybe this topic had been discussed before, but I couldn’t find a direct answer.
My question is about the manufacturing standards for plywood. In almost all cases plywood thickness comes rated as a rounded number: 1/4”, 1/2”, 3/4”…But in reality all of them are significantly thinner. For example the 1/4” plywood is 5mm, while the 3/4” is only 18mm thick. That is a significant difference. Therefore the question is why?
And, is there any kind of plywood that is made true to size and if so, who sells it?
Also, there doesn’t seem to be a standard about the number of ply for any thickness. At least it’s never specified in stores and in lumberyards.
I’ll try to attach a doc I found informative Meet Google Drive – One place for all your files
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