DIY Shot Blasting

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DIY Shot Blasting
Shot blasting is one of the most efficient ways to restore surfaces. (tools image by Stelios Filippou from

Commonly known as sandblasting or media blasting, shot blasting is the process of using granules to smooth or clean a hard surface. The abrasive material is projected by compressed air and controlled by a sandblaster. The process of sandblasting is quick and convenient for restoring surface to its bare condition. It does, however, require specific safety measures be taken before operation.

Skill level:

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Things you need

  • Tarp
  • Painter's suit
  • Safety eyewear
  • Sandblaster
  • Blast media

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  1. 1

    Remove all objects near your work site that are at risk of being sprayed with stray media. Cover immovable surfaces with a tarp and ventilate the area if the target is indoors.

  2. 2

    Wear a painter's coverall and safety eyewear for full protection. Otherwise, use attire that does not leave any part of your body exposed, including your head.

  3. 3

    Shut off the valves on the air compressor if they aren't already. Pour a bag of your choice media into the blaster's tank; the most common granule for multipurpose projects is silica sand, but ground nut shells, beaded glass and even metallic shards are available from home improvement retailers.

  4. 4

    Start the compressor according to the product label or instruction manual that came with the unit. Allow it to pressurise to at least 40 PSI before beginning.

  5. 5

    Adjust the air pressure to a low setting. Point the nozzle at the affected surface, holding it at least eight inches from yourself.

  6. 6

    Squeeze the trigger on the blaster and begin cleaning the surface top to bottom. Leave a steady stream on areas that require extra attention, but release the trigger immediately after it is cleaned. Only increase the air pressure if absolutely necessary to dissolve stubborn residue.

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