• WhiteOakBayou@lemmy.world
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      10 months ago

      I used a jig with a small cutting wheel to score the bottle then heat the score line with boiling ( or near boiling for thinner glass) and then dip it in water to break along the line. Polish with emery cloth or high grit sandpaper. The less delta T between the hot water and the dip water the smoother the cut. Finding your preferred Temps for the thickness of the glass is the art.

      Edit: Boiling water