Derivative of Tbuser's filament spool stacker modified to have charles pax's filament spool pre-attached so you don't have to screw it on. Just snap them into place and put the spool on.

Challenges his use of screws... Seriously? 4 screws to add a filament spool? To much work for me...

Print with support material. The short side should be printed on the bottom to conserve material.