Centauri Carbon Internal Spool Holder - SE3D Remix

I modified SE3D's Centauri Carbon internal spool holder. This is a bit longer to accommodate my MarsWorks refillable spool.I've also trimmed the lip way down and added a taper so that I slide spools on and off without removing the holder from the mount every time.This has a few mm of clearance with the 7.5mm spacer, but it might be a little tight if you're wall bows in instead of out like mine does.