Design – Bump Bend (faux roll) Bend Calculator

Bump Bending (Tube Rolling)

“Bump Bending” is when you make a series of small bends in a straight piece of tubing to approximate a rolled bend. Roll bending is the true way to make large sweeping bends in tubing. We show a roll bender in the “Bender Tech” article on this site. Start with the calculator above if you need to calculate the radius of an already existing shape (like a car roof or bumper). You can use the calculator below to figure out how many bends will go in your part and how many degrees to put on each bend!

Radius Bump Bend

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