Filament spool holder mounts to side of frame and eliminates need to top mounted spool holder. Prevents filament from unrolling and allows for easier exchange of filament.
1) Remove black poly-carbonate top-cap from machine - as far as I can tell this serves no purpose but to get in the way.
2) Mount to top frame section, using predrilled holes in the BI extruded Al frame-section
3) Use 2mm ID filament guide between wire guide assembly and filament motor.