I have to build a box (about 6" x 6" x 36") out of an electrically insulating material that can withstand temperatures of up to 330 F. G-11 garolite fits the bill, and is not exorbidently expensive. I plan to bolt 3/8" sheets together with 10-24 SHCS. Will I be able to tap threads that will hold. Should I epoxy it together? It will not see large forces as it is a lab instrument. Any comments would be appreciated as I don't have any sample material to try it myself.