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Hegar ( @Hegar@kbin.social ) 19•8 months agoIt just says “heating furnace”. Literally: add, heat, stove/furnace for the three characters.
No idea where glory hole came from.
cyberdecker ( @cyberdecker@beehaw.org ) 11•8 months agoThat is what this particular type of furnace is called in glassblowing. A glory hole is a specific furnace for reheating glass that has been gathered to keep it at the right temperature.