Re: Floor Core Material?
One key feature of the squares in to ensure good adhesion between the core and the laminate. If you took a large piece of plywood and laid it down in a wet laminate there is a good chance that you would get sections with less than adequate adhesion due to the woods inability to conform to the laminates original contour.
Divincell is available pre-scored on one side and is really flexible so there is really no need to cut it into squares but you can if you want to. The nida core and coosa board samples I have seen were not prescored so you would have to cut them.
From personal experience with helping install a new divinycell core in teh floor of a large 31' center console last winter....I found that keeping the core sections small (not necessarily 4"x4" or 6"x6" - but you get the idea) made them easier to work with and trim when necessary.
-Ed-
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