Compact Prusa MK3S/MMU2S BMG Mosquito Extruder

thingiverse

The provided text is a comprehensive guide to printing and assembling the Mosquito kit, which includes various upgrades for 3D printers. Here's a summarized version of the instructions: **Printing and Assembly:** 1. Use PETG or PC-ABS (Protopasta) for printing, as they provide high temp resistance and strength. 2. Add support enforcers or manual supports to the idler lever area due to overhangs. 3. Pre-thread screw holes in the top sensor cover, fan, and fan duct mounting holes. 4. Drill out the filament path in the body with a 2mm or 5/64" drill bit. **Component Installation:** 1. Add square nuts to the cover (4) and body (3). 2. Cut through the diagonal cut in the pinda probe mount for proper alignment. 3. Use a 6mm M3 screw for the angled left mounting hole for the extruder motor. 4. If using the Bunny Universal Carriage, print the spacer and lower plate for correct assembly. **Additional Notes:** 1. Use 45mm screws for top and right extruder mounting holes. 2. The side fan mounting holes are extended to allow 16mm screws. 3. The mosquito hotend mounting holes use M2.5 screws that come with the hotend in black. 4. Cut off a tiny piece (<0.5mm) of the lower ptfe tube where the extruder motor drive shaft enters the body. **Final Assembly:** 1. Install sensor covers and idler levers from remix sources. 2. Set e-steps correctly via gcode for the BMG gear ratio (standard or 0.9 degree motor). **Disclaimer:** The author of this guide acknowledges that they own no rights to any of these designs, which are a combination of various upgrades by different designers. They express gratitude and credit to the original creators.