Anet A8 extruder holder mounted in the z axis

Extruder motor mount on the z axis for anet a8 a, i3 etc...
The point is make light the faster moving parts, the carriage, z moves slowly there doesn't really matters the weight, but the shortest bowden helps set up the retraction settings right
the tension is fine with the springs, if you installed a fiber glass reinforced gt2 belt, not the shitty steal reinforced chinese one.
With the original setup, in the homing pos almost 2 stepper motors weight on the left z axis, if the carriage in the