Sandblasting glass
Sandblasting glass is a coldworking process in which fine grains strike the surface under compressed air. The abrasive removes small amounts of glass and can produce an even matte area, decoration or deeper relief.
Design and resist
Parts of the surface may be protected with a resist. Exposed areas become frosted when blasted. Repeated stages with different masks can create graded or layered designs.
Confusions
Sandblasted glass should be distinguished from acid etching, grinding and natural weathering. Sandblasting creates mechanical roughness, while acid etching attacks glass chemically. The method alone does not date an object. Examine boundaries, depth, grain and how the design follows the form.
