Am8 2040 Filament guide with anti-crash technology

In order to reduce desk space and get the spool out of the way, I decided to make the ball bearing spool holder from Denos (which is a GREAT design!)
https://www.thingiverse.com/thing:2537713

Denos also designed a couple of filament guides. The smaller of the two had an opening small enough that it was causing significant drag on the filament. In addition, the opening was forward of the spool holder such that a bind in the filament on the spool caused it to be pulled forward off the holder