100% printable spool holder (standing or attachable to Rep2 & Cube2)

I got tired of the multiple, awkward spool holders that have poor angles and friction which frequently "slip" and make noise (leading me to come check on my print every 3 min). I designed this multi-spool holder in blender that is thin enough to support all standard spools, and those spools now float [almost] frictionlessly behind the printer. It's also 100% printable!

NOTE: You must print these together! (that's why the only files I submitted have both parts). Otherwise the long rods th