Sherpa Micro Extruder & Slice Mosquito Mount for Prusa Mini+

A mount to add an Annex Sherpa Micro Extruder (Mirrored Version) and a Slice Mosquito Hotend to a Prusa Mini.

Mirrored Micro Parts Link=> https://github.com/Annex-Engineering/Gasherbrum-K3/tree/main/Release_1_2/STLs_to_Be_Merged/K3_K3rabiner_toolhead_pcb/Files/Sherpa_Micro_extruder/Extruder_mirrored

The better choice is probably to grab the latest version of the non-mirrored parts and mirror them in your slicer.  In Prusaslicer 2.7 you right click on the part and select mirror along the appropriate axis, see example in photos.  

Link to latest STLs => 

https://github.com/Annex-Engineering/Sherpa_Micro-Extruder/releases

https://github.com/Annex-Engineering/Sherpa_Micro-Extruder/tree/main/STLs

Rev01 is a prototype and is still under development.  Required hardware and wire routing has not been finalized.  Currently a ziptie on the motor holds the wire bundle.  I am using this 25mm 3 wire fan: https://www.mouser.com/ProductDetail/CUI-Devices/CFM-2507CF-0100-240-20?qs=ulEaXIWI0c84q0hprd89xA%3D%3D

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Trademark used with permission from Slice Engineering, LLC

You will want to test your PID values after this upgrade.  Here's the PID values I added to my start G-code to get you started:

M301 P19.41 I1.44 D65.61;Hotend PID

You will need to change your Extruder direction and E-Steps (Depends on your gear ratio). Go to settings and hold the button to get into advanced settings.  Change Extruder direction to “WRONG”. Test your E-Steps, but I used 878 with 50:8.  

You will want to limit the extruder current to keep the motor from overheating.  I use 300mA by adding the following code to my start gcode.

M906 T0 E300 ;TMC motor RMS current in mA.

Load and Unload filament lengths will be way off too.  Add the following code to the start gcode to prevent massive overfeeding and potential damage.

M603 L65 U80 ;Load/Unload length in mm.