I'm working on a science fair project and I need an inexpensive way to make a small box (2 pieces - top & bottom) out of plastic. The kicker is it needs to be waterproof (haven't found anything on the market and mount on a headband - reason why I have to make my own). Does anyone know what would be the best way to make an inexpensive table - top machine that I could use? Also can I make it out of plastic at least 1/4 in thick? Thank you very much.
* How to find a good vacuum cleaner for next to nothing, and why you likely don't want a shop vac
* how to make a simple platen with removable gaskets for different-sized sheets of plastic. (Basically a board with a hole in it, which is as good as anything if you're just making one object at a time)
* how to make inexpensive mix-and-match-size frames from aluminum windowscreen material, plus ways of making sturdier frames for thicker plastic
* pointers to more advanced info (on many-hole platens, formers with their own ovens, high vacuum systems, etc.)
You might also be interested in this article I wrote about how to make a little stand-alone oven for heating plastic up to 12 x 20 inches, with a $15 two-burner hot plate and about $10 worth of disposable aluminum pans.