It seams that more and more 3D printing users are posting tips, uses, or pictures of cascading walls of empty filament spools. Who ever thought that empty filament spools would cause such an issue? We are doing some digging to find out if providing filament on high quality cardboard spools is an option, something similar to Protopasta spools. Being cardboard would allow for easy recycling and would lead to a solution to this spool issue.