Spool Coaster for OpenBeam 1515 Extrusion

This is a spool coaster for 1515 OpenBeam extrusion. You just need two 608 (skate) bearings, two M3 screws (8mm), and two M3 nuts. They fit over the 1515 aluminum extrusion and the screw and nut lock from below. Since there are many different sized spools, I can't guarantee that every spool center hole will fit over this coaster, but it works for eSun filament.