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#Turn the crank to roll the metal bar or rod.
#Turn the crank to roll the metal bar or rod.
#Start with a large radius and continue to make the radius smaller every time you roll. If you attempt to roll a small radius all at once, the rod may make a corkscrew shape instead of a circle.
#Start with a large radius and continue to make the radius smaller every time you roll. If you attempt to roll a small radius all at once, the rod may make a corkscrew shape instead of a circle.
=== Demonstration ===
#Cut a 4 inch long piece of 1" x 1/8" aluminium.
#Bend the piece to the smallest possible radius.