How to Tape Off Before Sandblasting


Sandblasting is an incredibly powerful method of cleaning or shaping metals and other materials. Sometimes, when blasting an object, some parts need to be protected. Whether using glass bead, sand or other media, the amount of wear on the object you are blasting can be rather severe, and masking can become very important, but requires enough strength to protect surfaces from the barrage of the sandblasting machine. There is no need to go out and purchase custom-made blasting templates though, just some commonly found equipment from your local hardware store will do.

Things You'll Need

  • Duct tape
  • Wire brush
  • Cleaning solvent
  • Clean the surfaces you wish to protect. Depending on the finish of this surface, use either a wire brush to remove dirt and built up grime, and then a solvent to remove any oil or grease, or just solvent if the surface is delicate. Cleaning the surface of your object allows for better adhesion of the tape you will apply in the next step.

  • Cover all surfaces you wish to protect with duct tape. It is best to use tape of the highest quality available, and possibly of a color with high contrast to the surfaces you wish to sandblast.

  • Cover with a second layer for added protection.

  • Begin sandblasting, avoiding the taped areas as much as possible. Directly sprayed sandblasting will grind through nearly any material, but the tape will protect against media spray just outside of the focus.

Tips & Warnings

  • If you require heavy blasting along a taped edge, add a layer of light gauge sheet metal between the layers of tape to ensure maximum protection.
  • Always wear eye, face and body protection, as well as a respirator when sandblasting.

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