Safety glass is made by laminating two pieces of glass together with a sheet of plastic in the middle. You heat up this little sandwich and press everything together, and the plastic melts and sticks to the glass. Once everything cools down, it looks just like a normal piece of glass, but if you smash it, the plastic holds everything together. The glass is now a composite, and it's notably stiffer than a single sheet.
As it turns out, it's really easy to make this yourself using just a bit of plastic, binder clips and a toaster oven. And once you can laminate glass, life just gets better and better.
Step 1: What you need
glass microscope slides -- $.05 each from your local science depot. Tonight, I learned that, in Manila, you can buy microscope slides at the drug store. Isn't that awesome?
EVA film -- This is a thermoplastic film that will hold your glass together. You can get it pretty cheap on ebay. Get yourself a nice bialy roll of the stuff, because you're gonna want to play with this a lot.
Binder clips -- available wherever paper is looseleaf
A cheapo toaster. When playing with chemicals, I like to use dedicated equipment so I don't accidentally eat my experiments. Heated plastics play with our bodies in all kinds of ways that we don't understand. For $10, I can get an extra toaster and avoid being an inadvertent guinea pig. Plus--science toaster!