DIY I really need your help. Tomorrow my engineering course is creating cardboard boats that we're racing in the pool. It's 2 of the 3 high schools that are competing. The problem is that it's taking place at our school and the teacher from the other school doesn't want to haul over extra materials. So he decided to make the new rule that we can't bring in ANY extra materials. The problem is that we were going to use garbage bags to waterproof it. My teacher said that "if I can't see it, I won't say anything". My question is is there anything that's not noticeable that can waterproof our boat? Thanks!
Submitted May 28, 2015 at 07:00PM by Mozzahella http://ift.tt/1AvRuys
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