A minimalist spool holder, designed for the standard 1Kg/2.2lbs filament spools from SeeMeCNC.com, used on the Rostock Max, using standard skateboard bearings (22 mm x 8 mm x 7 mm wide), use M8 or 5/16" bolts and nuts (tight fit). One hole placed for fixation on the original wooden top. This allow to remove original spool support and give better weight distribution across all 3 legs once the spool support is install in center. Filament required depending of settings ~ 8 Meters / 26 feet / print time about 3 hours. Happy printing!No support material required, just print, add the bearings and bolts / nuts and enjoy!