Frit! Make frit from those scraps. You can make your own frit maker for a few dollars if you buy some steel pipes. A small one (in diameter) with an end cap, and a larger one (that the small one with the cap will fit into) with an end cap. Put the glass in the big one, then put the small one in cap down, and hit it with a hammer! Frit! I have a little magnetic parts bowl I put it into to get out any possible metal fragments.