DIY Tube Bender Design Using 2005 Chevy Trailblazer Rear Rotors - CAD Concept

This document is a 3D CAD (SketchUp-style) concept rendering of a homemade tube bender, not a factory automotive schematic. The design uses two rear brake rotors from a 2005 Chevy Trailblazer stacked together as the bending die. A 1 3/4-inch tube is attached to the wrench mechanism with U-bolts so the assembly can be disassembled for storage or adjustment. A small piece of metal with a threaded bolt holds the tube against the rotors; it is secured by bolts run through the cooling vents in the side of the rotors (not modeled in the drawing). A stationary guide, likely right-angle steel channel or C-channel, remains fixed as the rotors are rolled to bend the tube, primarily to achieve the correct height against the rotors, with the note that multiple options will have to be tested for best fit. A reader can learn the general layout and materials for building a DIY roller-style tube bender from salvaged brake rotors, including attachment methods and design considerations, though no dimensions beyond the tube size, no part numbers, and no torque or fastener specifications are provided.