Tube Design Calculators
We created this page to help you design and manufacture bent tube! Let us know what else you would like to see a calculator for!
Bend In The Middle Calculator
Double 90 – Symmetrical
The “CL” symbol in the drawings is the CENTER LINE of the tube. These are bent “center-out”, meaning that you will form all bends outward form the center of the part. In the case of positive clamp block distances, you can bend the part with both clamp blocks installed (if you have 2), or with one at a time. With the negative clamp block location design result, you can only have one clamp block on the tube at a time. Use a tube rotation gauge to ensure your bends are coplanar in this case.
Rolled Radius Calculator
You can use the calculator below to calculate the radius of an already existing shape (like a car roof or bumper). Measuring the radius of an existing large shape is tough without some help.
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!
Can I use this for any tube bender?
What should we make a calculator for next?
We will build our next FREE calculator for whatever gets the most votes. Just leave your comment and tell us what you want to see. Our 2 most common requests are shown below. We also get a lot of requests for the base 2-bend-U, just a part with (2) 90 degree bends. You can vote for anything, whether we have suggested it or not!