Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:5177533.

This is a number of piece parts needed to create a frame stiffener for a customized Ender 3 type printer. This design was done for a printer with 800mm vertical frame pieces. If you want to use this on a different vertical height, then you have to adjust the angle of the top and bottom support pieces. So I have included the STEP files if you have the skill to change this. It does require the use of some High School math to get the correct angle. I used 1/4x20 threaded drill rod. This worked pretty good with the rod stiffeners, I used 3 stiffeners on each side. These were epoxied together and held in place with a 1/4x20 nut at each end. I have included photos of the details were nuts go and frame attachment. References to Left and right are from the back of the printer.