Lime is a super compact & simple extruder. The gears are from the DXC extruder by Phaetus, Devil Design, and Creality.
It's so simple that there are only 3 parts to print, and none of them require supports.
K1's gears might also work, but I haven't tested them. Note that the DXC gears have helical grippers for the filament. It is probably superior to the ones on K1.
Feel free to make modifications to this design and ask for different formats of the CAD.
Creality K1 or APUS motor
3 Printed parts (Front frame, back frame, and idler arm)
DXC gears
M3 10mm screws * 6
M3 20mm screws * 1
M3 30mm screws * 2
Lastly, for the newest updates, go toππ
github.com/ProtonKicker/Lime
The author marked this model as their own original creation.