Spool Position Clip

I printed out the Filament Spool Shelf System by MikeGTP and really love it. The only thing I didn't like is that the spools could be pushed right through each shelf (totally a ME issue and not the model), so I designed this friction fit clip as a guide/stop for the spool. The clip fits on the very back of the shelf and acts as a guide for the spool to sit, as well as a stop to prevent the spool from being pushed through too far. NOTE: This is ONLY the clip. The shelf is a separate piece you nee