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How to Cut a Glass Tube

Cutting glass tubing is key to glasswork and glass blowing. Although glass is susceptible to shattering, you can break glass tubing into several pieces with clean cuts. Buy a long glass tube and cut it up for future art or science projects.

Things You'll Need

  • Sandpaper
  • Three-sided file
  • Protective gloves and eyewear
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Instructions

    • 1

      Decide where you want to cut your glass tube. Run a three-sided file along the cut. Leave a scratch on the surface, but do not saw the glass.

    • 2

      Lick your fingertips and place the saliva over the scratch you just created.

    • 3

      Turn the scratch away from your body and position your thumbs on either side of the area behind the scratch.

    • 4

      Use your thumbs to break the glass tube.

    • 5

      Use the sandpaper along the rim of the glass tube to sand down any rough edges.

Tips & Warnings

  • Take care when working with glass, as it may shatter. Wear protective gloves and eyewear to prevent injuries.

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