You can use a hammer or you can use this nifty tool to crush your glass and even sift it into 5 different sizes with the sifter set.
The Frit Maker Piston is 7 lbs. of steel and it's heavy duty walls and impact head are made to last for years. This set contains four 3.75" tall heavy duty cups, with 4.5" diameter screens. Mesh size of the screens are as follows <0.2mm, 0.2-1.2mm, 1.2-2.7mm, and >2.7mm and a handy magnet will help turn your scrap glass into inexpensive, clean frit!
