High Flow Fan Shroud for Printrbot Simple Metal

This fan shroud was designed to be:

• Easy to print at .3mm.
• Reliably and quickly rendered (no odd geometries)
• Very open for air flow.
• Aimed at the hot-end and the print.
• Not damaged by heat or bad prints.

General Repetier settings:
Layer Height: .3mm
General print speed: 70mm/s
Retraction per move: 2mm
PLA Temperature: 190deg
Extrusion Multiplier: 1.15