Summary

The filament spool was always sliding sideways and even got tilted off the spool holder, so I've made this piece to keep the spool in place and aligned with the extruder of my printer!

NOTE: This piece is like a cap which fits the black tube that supports the filament spool (so it doesn't get centered with the filament spool), but in future update I will extended it to the full length of the black tube, making the piece not only a stabilizer but also centered with the filament spool.