CHAPTER II GENERAL OPERATIONS 7 Cutting, bending, constricting and flanging the tubing--Methods of rotation and blowing. [Please select]
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] Some glass-blowers use a small carbon rod, about 3/16 inch in diameter, as a flanging tool for tubes larger than about 3/8 inch diameter, and a small iron wire or similar piece of metal for smaller tubes. [Please select]
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