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Q&A for How to Temper Glass
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QuestionCan l drill a hole in tempered glass? If I do, what will happen?Matt ChaseCommunity AnswerAbsolutely not. All holes, etching, sanding edges, and cutting must be done before tempering, otherwise the glass will break.
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QuestionHow do I turn regular glass into high-temperature-resistant glass?Community AnswerMelt the glass with up to 50% boric acid to make Pyrex. It will make it much more resistant to breaking from heat shock, and will lower its melting point.
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QuestionWhen heating the glass, how does the glass need to be supported?Community AnswerThe glass is supported by ceramic rollers in an oscillating heating chamber.
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QuestionCan toughened glass be reused by being remelted, like annealing in steel?Community AnswerYes, but make sure not to use congealing liquid anywhere near the glass, as it can evaporate.
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QuestionCan I temper glass in a regular cooking oven?Community AnswerYes. Pour ice cold water on it after running it in your oven at the maximum temperature.
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QuestionIs tempered glass made from float glass first?Community AnswerMost glass is made using the floating process nowadays, so, yes, tempered glass is made from float glass. However, other glass production methods can also produce glass that can be tempered (as long as there are no bubbles or irregularities).
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