Best industrial solution for filament changing

thingiverse

Using this arrangement, you can easily swap the filament without having to take anything away. You can extend it all the way up to ceiling level by changing the main rod and adding an extra spacer. There's enough room to switch out a spool without disassembling everything. (You just have to push its rod up and pull it out.) Instructions To be honest, I saw this competition and that idea popped into my head. It only took about 15 minutes to come up with.