Universal Stand-alone Filament Spool Holder (Fully 3D-printable)

3D Printer Filament Storage Rack, Wall Mount Spool Storage Rack, 3 Tier Filament Spool Holders, Heavy Duty Metal Shelf for PLA/ABS/TPU

3D-printable Split Filament Spool With Threaded Joint

wooj on Instagram: "Almost-finished filament spools have been accumulating for a long time in our studio – we're able to recycle the spools once they're done, but the filament remaining isn't enough to print one of our lamps, meaning we'd have to throw it away, which we don't want to do. So... the Baby Wavy was born. ⁠ ⁠ This was a solution for our translucent filament, but we're still looking for ways of using up our opaque filament, since it won't emit light. Drop an idea in the comments and w

6 Recycling Ideas for Empty Filament Spools

PullStruder: from plastic bottle to PET filament