Y-Z-axes fixation for Geeetech i3 X

Z-Axis stabilizer. Improves the overall rigidness of the printer. However, it is not necessary, except if you like to transport the printer. Initially this thing was meant to remove the twist of the Y-X-plane. However, it turned out to tilt the Z-axis instead of the Y-axis if the printer was twisted because the Y-axis is much more rigid. This fixation does not help alone - another fixation will be necessary...

- Version 1 is tight and is made with no clearance. Requires careful support remova