HE3D K280 Corner Supports

thingiverse

[](https://github.com/mkellsy/reprap-delta) The K280's default corner mounts are decent, but they have one part that serves both top and bottom, causing issues with both. The timing pulley on the top is too loose, which allows it to creep back and forth, resulting in print distortion. Securing all four M3 screws into the steppers on the bottom mount is nearly impossible. I had to re-tap the steppers to fix the threads. I created three separate parts designed to securely mount the steppers and pulleys to the frame. The top features longer mount points that prevent the pulley from moving laterally. The bottom corners are split into two parts: a corner mount, which holds the frame together, and a stepper mount that secures to the outer corner mount. The two-piece bottom mount allows you to install the steppers before putting the printer together, resulting in a far more precise and rigid design than the original. You can find the touchscreen housing at [https://www.thingiverse.com/thing:3467548](https://www.thingiverse.com/thing:3467548). ## Assembly To assemble, you will need: - 45 x M4 x 8 socket head cap screws (reused) - 45 x M4 Hammer Nuts (reused) - 12 x M3 x 8 socket head cap screws - 12 x M3 x 20 socket head cap screws - 3 x M3 x 30 socket head cap screws - 3 x Drive Pulleys (reused) - 3 x Timing Pulleys (reused) - 3 x NEMA17 Stepper Motors (reused)