Improved Version:

• more clearance on the tip so it also fits dirty nozzles
• more space on the back of the nozzle so left over filament does also fit → no more cutting when changing the nozzle
• this version if fully stackable (on the first version the nozzles were too high → not really stackable)
• added notches on the stack lip so if you stack a 1x1 on top it does not slide around
• added chamfer so the nozzles slide in easier