Heavy Duty Spool Holders

My version of a wall mounted spool holder. Uses two countersunk screws to secure to the wall, preferably into studs, and two 25mm tubes of your choosing. I used these which say 1" but they're really 25mm.  With the 2' long tubes you should be able to fit about 8 rolls of filament on it.  You need two of these brackets per assembly.