Printrbot Jr v2. Estabilizador del eje Z, no más Z-Wobble - Stabilizing the Z axis, non Z-Wobble.

thingiverse

Developed a solution to the Printrbot Jr v2's notorious Z axis issue, where the screw and guides often misaligned, created this straightforward system to stabilize these critical components. Simply print out this file four times, then position them as illustrated in the images. Support these printed pieces using a sturdy 13cm wide x 31cm high plate. To ensure success with your 3D prints, it is essential that you maintain the precise distance from the guides all the way from the printer base to its top surface.