Glass flowers start from 18×18″ pieces of flat borosilicate glass. The glass is scored with a glass cutter in a grid (across and down) to make an x/y array of smaller squares.
Cutting running pliars break the glass along the scored lines. Individual squares are broken apart by hand.
The final result: when everything goes well, a stack of glass squares used to make petals for flowers. When things don’t go well, a stack of glass squares and a stack of odd shaped waste pieces where the glass didn’t break evenly.
