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Old 01-02-2005, 06:36 PM
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A mandrel bend can be made on most benders if you want to go to the trouble of attaching a ball to a rod which is inserted into one end of the tube. Remember, the tube is being bent at only one spot and that spot is usually a constant distance from one end of the tube. The ball isn't pulled through the tube to make the bend. It's merely sitting there, at the point where the tube is being bent, and preventing the tube from collapsing.
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