Completely redesigned but based on https://www.thingiverse.com/thing:2540258 Thanks chekcian for the basic idea!
The main goals by designing was to have the forces of the Y-axis movement in the center of the threaded rods, and the pulley placed close to the motor to minimize the force to the motor bearing.
The only mechanical edit to the Anet A6 are two small chamfers of 10 x 10 on the middle frame plate for clearance for the threaded rods. See picture.
4x inside hexagonal bolt M4x25
1x bolt M4x20 or longer
2x nut M4
1x threaded rod M8x310
1x threaded rod M8x380
2x nut M8 with a width across flats of 13 MM (the M8 nuts that came with the Anet A6 have a width across flats of 13.5 MM and are not suitable for this design)
Fasteners that already came with the Anet A6:
4x bolt M3x12
7x bolt M3x18
1x bolt M3x30
9x nut M3
2x washer M8
The original Anet pulley made out of two pieces can be reused but I now use a solid one:
order the one "without teeth 16T 3B"
I can also recommend to buy a more flexible belt instead of the with steel reinforced belt that came with the printer:
All parts were printed with a 0.2 layer height setting, 1.2 wall thickness, 30 percent infill and PETG filament.
Some changes on this design on the date 2019-07-29:
- The nuts have been deleted out of the front pannel brace and are replaced with cilindrical threaded rod end caps.
Now the length of the threaded rods can be adjusted after the front brace is mounted!
- The threaded rods are 4mm shorter and the front pannel brace is replaced.
- 2x M8 nuts are removed.
- The step motor was raised with 0.25MM in the motor mount due to a measurement error.
- The belt clamp is now better suitable for a belt thickness from 1.38 up to the thickness of the original Anet belt that is 1,6 MM thick.
- All changed files have a revision V2.