Spool Arm Stand-off for Duplicator i3

MakerBot 0.9kg filament spools are a little bit too tall to fit on the i3's spool arm. This 70mm x 50 mm x 30 mm hunk of plastic raises the spool arm just enough for the MakerBot filament to fit.

Note: You'll need to replace the two mounting bolts with longer versions, around 1.25-1.5" in length.