This is a filament holder I made for my Metamaquina 2. It snaps right on the top of my printer without any screws or assembly/disassembly.Just print the two supports and they should be ready to go. I used a 12 mm aluminum tube for the holding the spool, but I also included an STL for printing your own pin, in case you don't have a suitable tube. The files are exactly the same, but you can print one at a time using the "Single" version or both at the same time using the "Double". I've had some issues with warping, so I would recommend printing one at a time, but if you have solved all your warping issues, just print them both at the same time.