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Old 2022-01-18, 4:33am
phentron phentron is offline
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Join Date: Jan 12, 2022
Location: country Victoria, Australia
Posts: 33
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I have re-heated & worked boro objects up to 12mm (1/2") thick without first using a kiln. Start with a cold flame (low oxygen) and hold the object far out in the flame (past the visible flame) - this may take several minutes. When you think it is evenly heated through its thickness, SLOWLY bring the object to the hot part of the flame. Now work the object normally.
If your object is 18mm (3/4") thick, it will take 5+ minutes to heat - if I had a kiln, I would use it.
Also, if the item is valuable and can not be replaced, I would use my kiln.

Peter
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