I've been looking for a better spool holder for my dryboxes, when I came across TheSameNameTwice's  excellent spool holder.  It prints quickly, is very compact, and doesn't use a lot of filament. 

But more is always better!  I made the clips that hold the bearings double sided, allowing for 2 spool holders to hold 3 spools.  This worked, but was a bit unstable, so i also lengthened the tang so that it connects all the pieces together, making the whole unit stable. 

Only Long tang-1x.stl and Double Ended Clip-4x.stl  are remixed. All other STL's are original to TheSameNameTwice's design, and are included here for your printing convenience. 

Print at 0.2mm layer height or lower.