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.

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The life cycle	Pro	Con
	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).
		Long distance The sand used for sandblasting comes mainly from Australia, India and China Show Alternatives » Alternatives finishing Local Beeswax
	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). Show Alternatives » Alternatives finishing Low Energy CNC mill Hand tools	Tips Dusts from sandblasting are safer if the material is untreated wood, but can be a hazard to health if the material is MDF, particle board (especially with synthetic lamination) or painted or lacquered wood. If you work with these materials you have to make sure there is a proper aspiration system in place.

	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.