![]() “When the tube or pipe is bent, fibers at the outside wall are in tension and fibers at the wall on the inside bend are in compression. Whether you’re bending up mild steel for a roll cage or some wild alloy for aerospace parts, the goal of tube bending stays constant: produce smooth, round bends. To those of you who didn’t just click your browser’s back button, here we go: The Goal of Tube Bending So without further ado, we bring you: wall factor and “D” of bend. And while we’d rather be bending a cage back in our shop right now, too, but we think you’d like to know just what’s going on when you throw a stick of material into your tube bender and wrap it around the die. Every so often, we have to break out our book learning. We’re about to get technical-like really technical. ![]() But beneath those dirty fingernails and stained welding gloves, there’s a lot of science at work. No doubt you’ve heard people say that metalworking is “more of an art than a science.” If you’ve ever watched the learned hands of a bonafide craftsman piece together a stunning custom bike or a breathtaking bomber seat for a hot rod using only tools that he made and knowledge born only from the gallons of sweat spilled on his dirty shop floor, you know metal fabrication is an art. ![]()
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