D5s Mini ball bearing spool holder.

D5s mini spool holder that goes over stock spool holder. You will need 4 ball bearings 26 outer, 10 inner, 8 deep. Saves my feeding motor some work and is a bit smother. On my machine it stays in place just by friction. Rollers will need some support on bottom cavity.
The filament guide in to the extruder is "work in progress" , it doesn't fit perfect, it should work with a bit of fitting and some tape.