[Gdeaver]

While honeycomb materials may be good for some apps on the bot, they tend to be expensive. An alternative to the 1/2" plywood would be to take a piece of 6mm or 1/4" birch plywood and laminate a layer of 5 - 6 OZ carbon fiber to it. You'll get a very ridged and impact resistant material. We do this for our electronics board and other parts. The goal being to introduce the students to some composite construction. You could make your own honey comb stuff but it is more difficult than the plywood and carbon.