alright so a friend and i are building a box - chose lexan for the top sheet - i looked at the lexan and it looks wicked thin, .93 something blah blah of an inch - ||
go with HDPE, it's a lot cheaper. You can get a 2x8 sheet (or is it 2x4, but im pretty sure its 2x8) that's 1/4" thick for only like 22 bucks or something like that. About 30 w/ shipping