Lulzbot Mini Spool Arm Adapter

Wanted a smoother spool arm for my mini so I decided to make this one. Gives a slight curve so the filament spool rotates smoothly and is small enough that it works with varying spool sizes.

Added a v2 quick mod so there are slants at both ends.

Edit 7/25/2016: Been using this for a bit now and since printed in Lulzbot Green ABS, the curved edge is really, really smooth. The spools spin with _much_ less friction.

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