Classic filament coaster, optimized for 3dk filament spools.
You´ll need four 608 bearings. No threaded rods, no screws, nothing else but two sets of the printed parts.
It coasts 320g spools 800g spools and also 2kg spools without any problem.
All you need is four bearings 8x22x7 mm (=size 608). Push the Bearings into the tubes and snap the tubes to the 3dkoaster pices. There you go!
No more tangled up filament no more jams because the filament fell of the spool.
Print the 3dkoaster pices with standart settings and 20% infill.
Print the tubes with standart settings and 15% infill.
Push the bearings into the tubes. Use a small hammer or just hit the tube with the bearing against your table (it will leave marks). Snap the tubes to one 3dkoaster pice and snap on the other 3dkoaster pice. Be careful, not to break the Snappers.