MakerBot Mini inside filament guide

SummaryJust a replacement for the inside filament guide that came with the MakerBot Mini. Our's didn't have a little lip that would stop the filament tube from being dragged down to where the filament is kept, so I designed a quick replacement. The cylinder part of the print comes out very thin, but I don't have any plans on changing the file because we don't use the inside filament holder anymore.