DIY Grit Blasting
Grit blasting is the process of cleaning hard surfaces using abrasive granules that are projected by compressed air. Also called media blasting or sandblasting, the procedure can clean the most stubborn residue and coatings almost instantaneously. This includes dirt, rust and thick layers of paint. Grit blasting is also effective in simply smoothing out or restoring a weathered surface. You must handle the blaster using the proper safety measures for the best results. Does this Spark an idea?
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Things You'll Need
- Tarp
- Media blaster
- Silica sand
- Safety goggles
- Painter's overalls
- Dust mask
Instructions
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Clear the worksite of any objects that are at risk of being hit with stray media. Cover immovable surfaces with a sheet of heavy plastic or tarp to protect them.
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2
Shut off all of the blaster's air compressor valves if they aren't off already. Lift the lid on the blaster's tank and pour in the media of your choice. The most common granule for general projects is silica sand, but more abrasive media is available from home improvement stores if necessary.
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Start the compressor according to the directions on the label or user manual. Allow the air pressure to reach 40-100 PSI before operating the blaster.
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Maintain a distance of at least 8 inches between yourself and the target. Set the intensity to a low setting and point the nozzle of the blaster at the surface.
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Squeeze the trigger to begin spraying your target. Spray from top to bottom. Dispense the media using controlled sweeping motions for even coverage.
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Increase the pressure, if necessary, to treat stubborn areas or especially thick finishes. Spray the media in short bursts to reach tough spots.
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Tips & Warnings
Wear safety goggles and painter's overalls at all times during the procedure. A dust mask or respirator also helps filter the airborne residue if you are not working in a well-ventilated environment.
References
- Photo Credit tools image by Stelios Filippou from Fotolia.com
