Sandblasting is when a product is subjected to sand or some other coarse material that is pushed out at a high velocity by force of air. The abrasive hits the surface very hard giving the glass a matte finish or some called a rough finish.
Why are glass pieces sandblasted you might ask?
- The glassblower wanted a matte finish
- The glass had some devitrification and this was the best way to hide or remove it.
- The glass had some other imperfection and sandblasting is used to remove the imperfection or hide it.