Hello, What is everybody thinking is a strange way for making beach
glass. Using tumblers or even with acids. A very simple way is to sand
blast pieces of glass. You roughly make the shape from glass and than
blast al sharp edges away. Depending on the grid you are using you can
play with the roughness of the surface. It is trough Hydrofluoric acid
is dangerous but is a nice stuff for etching titanium, without damaging
gold ore other components which can bad added in the jewelry.