Tips

Sandcarving Rough and Uneven Stones

Don't shy away from this substrate.

This article is from our older website archives. Some content may not be formatted or attributed properly. Please Contact Us if you feel it needs to be corrected. Thank you.

Rough, uneven stones are our biggest challenge. We blast natural sandstones for a funeral home on a regular basis. These stones have to first be washed thoroughly, since the irregular surfaces hold a lot of dirt and dust, which in turn prevent stencils from sticking to them. After washing, the stone has to dry for quite a while to avoid “sweating” after the stencil application, which can result in lift-off during blasting.

Since all photoresist has a stiff cover sheet on one side, it is not the best choice for this substrate. To blast these stones, we use a soft vinyl material that comes in a roll that we pre-cut with our plotters. Before plotters, we hand-cut the stencils from this material. The 11 mil-thick resist is soft and flexible, which allows it to adhere to uneven surfaces without a problem. The adhesive is also strong enough to stick to these porous surfaces for prolonged blasting to achieve depth. For these stones, I usually blast at 40-50 pounds of pressure while holding my nozzle about 10-12 inches away.

-Ruth Dobbins, Professional Glass Consultant

Tags
Show More

Ruth Dobbins

With over 35 years in the glass business, Ruth Dobbins offers experience in fused and cast glass, as well as in glass-etching techniques. She owns Professional Glass Consultants with her husband Norm and holds a master's in printmaking and art history.

Related Articles

Back to top button
Close