カッティング
glass cutter
Japanese: ガラスカッター
A tool used for scoring. The wheel at the tip scratches the glass surface. / Note: Oil-based models are common.
A tool used for scoring. The wheel at the tip scratches the glass surface.
Note: Oil-based systems are common.
Learn More
A glass cutter is a tool used to score the surface of glass by rolling a steel or tungsten carbide wheel (blade) across it. Although it is called a “cutter,” it does not actually cut the glass; rather, it scores the surface to prepare it for precise breaking during the subsequent breaking process. Wheel-type cutters are currently the most common, and oil cutters equipped with an oil-lubrication mechanism are the most widely used.
Glass cutter wheels come in different grit sizes (angles), and wheels with a shallower angle are suitable for thick or hard glass. Since the quality of the score line depends heavily on the condition of the cutter and how it is used, it is important to check for blade wear and apply oil as needed. Worn blades produce shallow, uneven score lines, which reduces the precision of the break. Regular blade replacement is the most sensible approach in terms of both cost-effectiveness and quality.
Related Concepts
By understanding the concepts of "score," "oil cutter," and "basic cutting form" together, you can develop a systematic approach to selecting and using a glass cutter.
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.