Airtight Filament Box Part

thingiverse

I needed a custom filament box for my Robox printer, as I use it frequently for work and have various colors of open filament rolls. The smartreel filament on my Robox printer is convenient, but I prefer to buy generic filament spools in bulk due to the ease of access to different colors. The smartreel filament can be exposed to air while printing, which I find annoying. I designed a box using 25mm conduit tube and cut holes for easy insertion and removal of the filament. This method is simple, strong, and quick, as it eliminates the need for internal supports within the plastic box, which can deform slightly. A good circle should be cut to ensure a tight seal; however, this might make inserting the pipe challenging. Cutting the pipe end at an angle solves this issue. To increase airtightness, I placed silicone sachets in the bottom of the box. These can be purchased on Amazon or eBay for a few pounds/dollars and are highly effective in maintaining a tight seal. The part attached is designed to allow filament to exit the box when in use. Two parts per roll work well, with one at the bottom where the filament exits and another higher up where it re-enters the box. This design keeps the filament airtight when not in use. I used 4mm (2mm inside) teflon tube for this purpose. For the top part, simply remove or slot out the teflon tube when using the filament, then insert it back into the part on the top of the box when not in use to maintain airtightness. A hole is not necessary at the top piece; leaving one exposed can be advantageous during use. The pictures provided should clarify any confusion. The screws used are approximately 3.5mm wide and designed with countersinking for the top of the screw. A 9mm head size was used in my case, which might vary depending on your printer and settings. Print Settings: Printer: Robox Rafts: No Supports: No Resolution: 0.1 Infill: 20-30% Notes: This print is quick and easy (approximately 25 minutes) depending on settings and printer. To minimize filament waste, I print each color as a purge between changes. Each part requires two screws for assembly. As a community-driven project, this design is shared under the assumption that it will not be sold or profited from. It's essential to support the 3D printing community by respecting its open-source nature and contributing positively.