Sandblasting
Sandblasting
Sandblasting is the process of shaping, cleaning and smoothing surface, by blasting solid particles (of sand, baking soda, corn cobb, walnut shells etc.) across the surface at high speed.The effect is similar to that of using sandpaper, but sandblasting provides a smoother and more even surface. This process is used to remove paints or coatings before applying a new paint or coating. It can also be used to remove parts of paint to create a decorative pattern.
The life cycle |
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Con ![]() |
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Low footprint The sand used for sandblasting is garnet, the same used for waterjet cutting and on sandpaper. It is a widely available mineral that is often mined from sandy beaches together with other ores (1). |
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Long distance The sand used for sandblasting comes mainly from Australia, India and China
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Low investment A sandblasting gun is cheaper than other mechanical engraving tools. Easy reuse The sand, if used on untreated wood only, can be collected and reused several times until it loses its abrasive power. |
High energy Compressors, such as those used for sandblasting, are amongst the most energy consuming machines in woodworking (1).
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Non toxic Engraving does not have toxicity issues, if you avoid protecting with unsafe finishes. Long lifespan The treatment is durable, as it takes off part of the material permanently. |
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Links
Eco info
Information about garnet, the sand used for sandblasting (USGS Mineral yearbook)
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Other Finishing
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Examples on Harvestmap.org