Fan Guard 40mm. Designed for 3D Builder printer.

40mm Fan Guard. To guard your fan against damage caused by filament entering. Specailly designed to "not obstruct" the airflow through the Fan. Usable for all 40mm fans, designed especially for the 3D buider.
Design #2 with countersunk holes for the screws.

Bracket for the Single extruder 3D builder.
http://www.thingiverse.com/thing:602423

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