Prusa i3 Direct Extruder with X carriage for E3D hotend, full cooling.

Yet another design of extruder for Prusa i3. X carriage is compatible with other style direct extruder with NEMA17 stepper.

Key Features:
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- Compact and lightweight X carriage, no zip-tie LM8UU bearing mount.
- Quick filament change locking lever.
- Robust cooling with 40mm fan shroud and 52mm blower nozzle.

BOM:
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- MK7 extuder gear 10.5mm effective diameter
- Spring 5mm ID
- 624ZZ bearing
- E3D hotend V5, (the long one/clone)
- 40mm fan
- 52mm b