Some flooring plywood ... cuts the foam into roughly the right shape with a hot wire. Clean up is done with sanding blocks, a plane, and a level. The next step is laminating the board with epoxy ...

Plywood and particle board have long been used for structural ... To avoid those problems, engineers at 3M developed a reinforced polyurethane foam that can be supplied in sheets which are ...

A few years ago, [Peter] built a gigantic remote-controlled cargo plane out of what is basically foam board and a few aluminum ... reinforced with plywood and poplar struts.

If you’re working over a wood subfloor, cement board is the right choice for your tile base. It’s never a good idea to install tile directly over plywood ... cement board instead of the ...