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Old 2017-01-10, 6:21am
udona udona is offline
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Join Date: Oct 27, 2016
Posts: 3
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Hi, the diamond shears (or round shears) is used because with this kind of shears it's easier to cool down the "neck" of the bead in a even way and it may help to prevent any crack when you take off the bead from the blowing tube. As you know, with this technique you work with a very tiny glass that cools down very quickly and you have to do whatever you can to prevent termal shock. Also with a round shears it's easier to have a nice and round hole. If buying a professional diamond shear is too expensive in the begining you can try a cigars shears ( they are made of stainless steel too and have round blades).
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