The dies are curved pieces you attach to the bender and into which you place the tubing to form the bend. The different dies will correspond to different diameters of tubing. Additionally, you can find die sets for either round or square tubing.
Ensure that you buy a tube bender and not a pipe bender. Tube and pipe are not synonymous, and the scaling is even different, so the dies in a pipe bending set will not properly fit tube. This usually leads to flattening, buckling, or kinks in tube bent with a pipe bender.
Follow the instructions. As always, specific machinery may have specific steps due to design or other requirements. Thoroughly consult the directions that come with your equipment.
3Select the appropriate-size die for the tubing you need to bend. For instance, if you need to bend 1” tubing, then you would select the 1” die.[1]
Using the correct die is very important. If the tubing doesn’t fit snugly into the die, then you can end up with a flattened or kinked finished product.
