Makerbot Z18 Filament Spool Holder - Strut Type

This spool holder is designed to fit tightly onto the back corners of a Z18 (with top cover removed). After you push them tightly in place, they will be rigid like extensions of your printer.

This structure is optimized to withstand vertical loading and have a high fundamental frequency (like on bridges), so that, you can hang up to 10 spools of filament on it, and still carry your printer around without taking them off. After you start using these, you will not have to worry about weight or