6

I've seen these cheese plates, art, spoonrests etc. are made of melted glass bottles. Is it possible to melt these in a normal household oven? Or do you need something like a kiln?

If it is possible is it safe and how many hours would it take? Has anyone done it before?

  • some flexibility may be required in interpreting this question. Does "normal household oven" include microwave ovens? If so, there are gadgets known as microwave oven kilns which can reach temperatures up to 1800° F. Even though this is a lower temperature than walrus' answer link, many of the comments on Amazon indicate that it works well for making jewelry and related glass fused items. – fred_dot_u Aug 14 '17 at 19:57
  • @fred_dot_u Does it say anything about whole bottles? Small glass pieces are one thing, but being able to melt / slump a whole bottle is a different scale that I am not sure would work with the "microwave oven kiln", especially if it is not long enough to cover a whole bottle (ie a wine bottle) – Wimateeka Feb 5 '18 at 13:27
  • Certainly a good point, hence my comment rather than an answer. The heat from these microwave kilns come from a reaction of the substrate with microwave radiation. It's a rather small amount, limiting the amount of heat that can be generated. – fred_dot_u Feb 5 '18 at 23:00
5

Glass has a melting temperature of around 1400-1600°C (see here ), and most household ovens top out at around 200-250°C so no, you cannot melt glass in a normal home oven.

3

If you are trying to slump glass into a form then, your oven, which can reach temperatures of 500 degrees may not be the answer. That said you could use your oven to raise the temp of the glass, remove it and use a propane torch with mapp gas to complete the process.

This is a convoluted and potentially harmful/dangerous method, so plan your strategy well, WEAR PROTECTIVE GEAR, AND BE SAFE!

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