THOMAS FREDBERG / SCIENCE PHOTO LIBRARY THOMAS FREDBERG / SCIENCE PHOTO LIBRARY
Glassblower at work. Glass object being handled before annealing. Here, the thickest part of the glass object is being allowed to cool down. The glassblower has to maintain the correct temperature. If the object is removed from the blowpipe and placed in the annealer while its too hot, it will lose its shape and slump.
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