Sherpa Crew Mini for MK8 gearsets

I had success with my MK8 version of WristWatch extruder so I figured having two of these in one extruder will be even better.

Sherpa Crew Mini with MK8 gearsets pulling soft matte PLA at 220C with some extra friction @60mm3/s

BOM follows the original Sherpa Crew Mini except the bearings and gears for filament which use the ones from WW MK8 (below) - 2x 685-2RS bearings, two sets of 50T gears with 5mm shafts that are the same for BMG sets and two of MK8 filament gear fir 1.75mm filament.

When installing the gearsets, make sure if there is some eccentricity with the 50T gears then keep reinstalling one of them and turning them by hand to eliminate as much binding as possible. If it is kept unchecked, the rear part of the extruder will split and misaling the shafts causing issues with binding and unnecessary load and heat to the stepper.

NOTE: You can still use RIDGA gearsets and it functions like it should, however printing TPU becomes near impossible due to the inceased tolerances around the gears. MK8 gearsets keep TPU where it needs to be.

Weight of fully assembled extruder printed out of unfilled ASA is approx 150 grams. So far I printed from 85A TPU to PPA-CF without issues, but there will be minor tweaks coming as soon as I'm going to have a bit more free time. Do not use nylons in a hot chamber it will get soft and sloppy.