Robust Multisize Dual Spoolholder

We optimized our design for dual-extruder setups, while at the same time being flexible to suit multi-sized Filament-Spools. The handle and the robust design make it perfect for portable setups. We used beech wood for the primary structure for maximum stability, but there should be no problem using printed parts. For maximum angular momentum usage we used ball-bearings ( see pdf ).