X5S second (left) Z-stop holder for 2020 extrusion

thingiverse

I have designed a straightforward Z-stop holder for my X5S's second Z-stop. In this particular printer, it is quite common for the Z stepper to lose synchronization, making it necessary to check leveling nearly every time. To avoid this inconvenience, I added a second Z stop for automatic leveling. This setup will not work with the stock board but should be compatible with almost any other board that has provisions for a second extruder. Simply connect your second Z motor to E1 (second extruder) stepper and the second Z stop to any available free end stop (I used Z max). Be sure to test it before using, so your heat bed doesn't collide with the end stops or the extruder. The holder is mounted using M4x8 and M4 t-nut that came with the printer. Additionally, an M4 washer was needed between the mount and the extrusion. The end stop is secured with two M3x4 screws; longer screws will also work.