Can diamonds actually cut glass? How does that work and why can’t other materials cut it as well?
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Cutting brittle materials is done by stabbing into it and then dragging your ‘blade’ to make a scratch. Ten thousand scratches is a cut.
Stabbing into a material requires something harder than it. Glass is pretty hard, so that limits us to 2 common tool materials; diamond and carbide. Diamond is the hardest thing out there, and because glass is so easily broken you want to choose the absolute best tool for the job. So, diamond dust applied to a steel tool is used, and the cut is made very slowly and carefully.
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