Compact Belt Drive Extruder

Just another Wade-style extruder.
It's rotated by 90 degrees and uses a 3:1 GT2 belt drive.

The belt should have about 78 teeth, but can vary by a small amount.
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BOM:
(1x) Hobbed Bolt (with washers and nuts)
(1x) NEMA17 Motor
(1x) 20t GT2 Pulley
(1x) 78t GT2 Belt
(2x) 608 Bearing
(1x) 688 Bearing
(1x) 8x18mm smooth rod or threaded rod
(2x) M4x50
(2x) M4x20
(1x) M3x30
(3x) M3x10
(4x) M4 Hex Nut