Circle Cutter

Circle Cutter is a hand tool with a bar the scoring head can slide on which is held in place with a set screw. The bar is connected to a central hub that has a suction device or anti-skid surface so it can spin around but this limits the minimum size to around 0.5in(12.7mm). Circle cutters should not be confused with a Lens Cutter which does the same thing but in a different way.

Circle cutters that use suction based hubs don't work well on irregular surface glass.

TODO

Seems like you have stumbled into a page that isn't complete yet! If you can help fill in the following missing content please feel free to contribute!

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• pictures of various circle cutters
• tore down circle cutter
• gif of using a circle cutter
• example score with and without relief cuts.

Similar Tools

Lens Cutter which allows for smaller circles than a Circle Cutter to be cut.

Uses

Scoring circles or arcs of various sizes.

How to Use

1. Measure the Diameter or Radius of the circle you wish.
2. Set the Circle Cutter to the Radius or half of the Diameter. Note: If your tool has a ruler on it, verify it is correct before using it!
3. Position the hub in the center of the glass you want to score on the smoothest flattest side.
4. Spin the arm around without pressing to make sure the hub is placed in a spot where the head will score the glass desired.
5. Hold down the tool or push the suction lever down.
6. Grab the cutting head and apply force while rotating to score.
7. Add some Relief Cuts to free the part.
8. Run the score lines to get your part.

Parts of Tool

1. Hub
2. Bar
3. Set Screw
4. Scoring head
5. Suction lever.