Z-Axis Bracket Mount
The SolidCore Printer has two different z-axis designs. This z axis bracket design is for the z-axis motors on the bottom of the frame.
Independent Driven Z-Axis Motors / Single Z-Axis Motor
Both z axis designs use 3-point bed leveling.
https://youtu.be/T9B5B61Mo4k
For more information see
SolidCore Printer https://3ddistributed.com/corexy-3d-printer/