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カッティング

straight cut

Japanese: 直線カット

Place a ruler against the edge, score a straight line, and break it along the score.

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A straight cut is the most basic cutting technique, in which you use a straightedge as a guide to score a straight line with a glass cutter, then break the glass along that line. It is used to cut shapes composed of straight edges, such as rectangles, squares, and triangles. It is the first step for beginners learning how to cut glass.

The key to making a high-quality straight cut is to follow these three points: (1) Hold the ruler firmly and score at a consistent speed; (2) Break the material immediately (without delay) after scoring; and (3) Position the running pliers precisely at the end of the score. If you have to re-score the cut, the surface will crumble and the wire will no longer break cleanly, so make sure to cut it in one go.

Related Concepts

Once you’ve mastered the basic cutting form (cutting-form), the fastest way to improve is to practice using the three-piece set consisting of a straightedge, a glass cutter, and running pliers.

The key to making a high-quality straight cut is to follow these three points: (1) Hold the ruler firmly and score the wire at a steady speed; (2) Break the wire immediately (without delay) after scoring it; and (3) Position the running pliers precisely at the end of the score. If you have to re-score the cut, the surface will crumble and the wire will no longer break cleanly, so be sure to score it all the way through in one go.

This entry is written in Japanese by Rei Chikaoka and translated for readers outside Japan. If something reads oddly, the original is the source of truth.