History of the sandblast
Sandblasting can occur naturally, as a result of the particle blown by the wind to windowpanes. An artificial sandblasting process was patented by Benjamin Chew Tilghman on October 18, 1870. At the beginning, sandblast is used for industrial purpose like removing rust on ship, polishing metal surface before plating or painting. Afterward, it is used for artistic purpose like carving stones or glasses.
Sandblast method
Sandblast method is a technique that is applied sandblasting to glass art. It sands glass surface that is not covered with masking tape by forcing solid particles across that surface at high speeds using compressed air. You can use multi color coated glass, color glass or clear glass to make works. This method is a newly method in glass art methods, it started about 100 years ago. There is no need to set up large equipment for heating glass to very high temperatures, and you can make works easily. Let's make glass art with us!
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Step 1
At first you copy a design that you are going to carve onto a sticky sheet, and put it on the glass surface. You need some techniques to put it on the surface, because the glass surface is not flat. You can select your favorite design from some books of copyright free design in the school. If you are good at drawing, you are able to draw design.
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Step 2
You cut the outlines of the design. This process is very important, because a good cut makes good works. Of course, a bad cut makes bad works. In great work case, it takes for weeks.
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Step 3
You remove sheets from the surface that you are going to sand on. And you cover bare surfaces that you dont't want to sand with a masking tape. If there is a gap between the mask, the surface will be sand. So, you have to be careful to check that there is no gap.
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Step 4
You sand the bare surface by forcing solid particles across the surface at high sppeds using compressed air with sandblaster. You can make different tone and gradation by changing pressure and time to sand. It is possible to express a third dimension.
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Step 5
You check that all the bare surfaces are sanded, and remove the sheets from the surfaces that you don't want to sand on.
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Step 6
Finally you treat the sanded surfaces and complete.
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