How to Round a Glass Edge

Written by cheryl torrie
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Making your own drinking glasses is a great way to keep empty glass bottles out of landfills. But if you do not round the glass edges properly, you may find yourself reaching for the commercially made glasses again. Rounding the edge makes a glass smooth and safe for drinking. The right rim finishing technique is easier than you might think. You can round a glass edge without a propane torch or any costly glass-working tools.

Skill level:
Moderately Easy

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Things you need

  • Hand-held electric multi-tool
  • 3/16-inch silicon carbide grinding stone
  • Glass
  • 3/8-inch felt polishing cone
  • 3/8-inch multi-tool tip
  • Polishing compound
  • Dish detergent

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Instructions

  1. 1

    Place a 3/16-inch silicon carbide grinding stone in a hand-held multi-tool.

  2. 2

    Hold the glass securely with your non-dominant hand and place the edge of the grinding stone flat against the glass rim.

  3. 3

    Turn the multi-tool on and move it smoothly over the top edge of the glass to smooth the top surface.

  4. 4

    Turn the grinding stone toward the outer edge of the glass rim and run it around the outer edge of the glass.

  5. 5

    Turn the grinding stone toward the inner edge of the glass rim and run it around the inner edge of the glass.

  6. 6

    Turn off the multi-tool and replace the grinding stone with a 3/8-inch felt polishing cone attached to a 3/8-inch tip.

  7. 7

    Dip the polishing cone in polishing compound and polish the top, outer edge and inner edge of the glass rim.

  8. 8

    Wash the glass with dish detergent before using.

Tips and warnings

  • Holding the glass securely and moving the tool slowly around the rim will give the smoothest finish.

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