Dual GT2 Belt Driven Z Axis for Hypercube

thingiverse

This is a redesign of the Z Axis for the Hypercube. I initially built it using 2020 extrusion and a leadscrew, but was not satisfied with the bounce of the bed and tilting/rocking, as well as the play of the leadscrew/nut. To solve this issue, I redesigned all the Z Axis using two 8mm rods and drive it with two GT2 belts that are driven in sync by a single motor connecting the belts with a shaft and pulleys. The results are outstanding - virtually no bounce, and none at all. A picture is included of my stock Hypercube Z axis for reference, as well as many pictures of the entire Z system. All Sketchup files are also available here. I hope you enjoy this redesign. Before printing, ensure that it will fit your specific Hypercube setup, as the Y dimension may vary depending on the size of your cube. My Y extrusions were 350mm in length. To build this redesigned Z Axis, you'll need a few key components: GT2 Belt, 150mm or preferably 200mm loop GT2 Belt, four 625zz bearings, two 608zz bearings, one 16-tooth 5mm pulley for the motor shaft, three 16-tooth 8mm pulleys for the 8mm shaft, M5 screws to bolt to 2020 extrusion, extrusion nuts, four M4 screws to secure the plywood bed to the Z belt/bed support, and M8 washers used as spacers on the 8mm rod for placement of pulleys. I am completely satisfied with the performance of the redesigned Z Axis - it's a major improvement over the original design.