Bowden Extruder (manually loosened) for Micromake C1 and other

thingiverse

I modified "Super Bernis simple MK8 bowden extruder" Lever to eliminate redundancy from the printer's conversion (linear rails) by utilizing bearings in the V-slot roller. The hole was enlarged to 5mm and the bearing support reduced to 4mm. I utilize a Micromake C1 with an MK8 direct drive extruder. This setup performs significantly better than the original, as it can be relaxed with one motion without twisting and constant spring force results in proper movement. The tension spring used is exactly the same as the factory bed level spring. I've already ordered some from Aliexpress through Micromake's official vendor at https://www.aliexpress.com/item/Micromake-3D-Printer-Parts-10pcs-lot-3D-Printer-Extruder-Spring-for-Ultimaker-Makerbot-Wade-1-2mm/32709968690.html?spm=a2g0s.9042311.0.0.OD13it. It's crucial to note that the original Extruder Micromake C1 uses a top bearing, which is actually a lower bearing. In order to correct this, the direction of rotation of the extruder stepper motor must be reversed in the firmware (see pictures).