A remix of KillaCycle's overhead spool holder to accommodate 3kg filament spools. New features include (1) screw-in bar and (2) extended height. Retained lower height for regular 1kg spools. Probably not necessary to have the lower height, but what the heck - it looks good and saves some material.
Use ABS and a bit higher in-fill for stronger parts.
I live in Beijing and operate a LulzBot TAZ 5 and a Replicator 2.