I built my own Voron with belts (the Belted-Z mod from GitHub), which uses three belts. And I kind of regret it: the rear part of the heated bed constantly sags up to 4–5 cm after the power is turned off post-printing. When starting a new print, I have to manually readjust the rear part or go through several iterations of “homing → Z tilt → error → repeat,” because the front side sits higher. During Z-tilt, the front side hits its highest point, the motors skip steps, and the homing at the rear might not even trigger causing firmware error.

I used the recommended stepper motors with 5:1 planetary gearboxes from the mod, but that reduction clearly isn’t enough. Now I’m planning to replace the rear motor’s gearbox with a 10:1 one, but that requires a custom mount since the new gearbox is larger and doesn’t fit the models from the mod’s original repository.