[EricH]

Originally Posted by JesseK

If you need thin, strong boards that can hold the weight of a robot (like ramps for 2007), then honeycombed fiberglass may be a good fit. We've also use it for our electronics boards since 2007. This year we might use something different. The caveats: it shears very easily, so use wide washers at every mount point; it is not meant to be a structural member that can withstand impacts, so the weight it carries should be light during all interactive times of play.

Corrugated plastic, properly supported by frame, is similar, but maybe a bit tougher. You still need the washers (the plastic crushes a bit), but it can take a pretty tough impact. 330 used it for ramps in '07.