Quote:
Originally Posted by lietuviai
I bought a special hand tool for small diameter tube bending. It does a great job without kinking. The trick is learn which way to insert the tube as you can bend in the wrong direction very easily. So instead of bending a "S" shape you can very easily accidentally bend "U". 
It looks very similar to this tool.

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Cool ... that looks like it bends a pretty tight radius.
This is the kind I had to work with. It bends huge, awkward turns and the distance between the two rollers allowed for kinking.