Printer-Mounted Filament Dry Box (uses fixed seat rollers)

Tired of tuning your printer over a few days only to find out your filament has been sucking up moisture and is now the root cause for your disappointment? And you also use a pair of fixed seat rollers as your spool setup? Voila! And it goes on top of your printer frame too!

Printing Notes

This print is NOT air tight! The tolerances between all of the parts are small enough that the assembly physically doesn't shake apart, but it is in no way an air tight seal. My intention with this design is to HEAVILY limit the amount of filament exposed to the air at any given point while printing, and that I believe it will do. If you want to make this an air tight seal, then best of luck to you (I recommend hot glue on the gap fillers)!

Designer Notes

While I was tuning my Ender 3 over the last few days, I was using PETG to test how well I had tuned and calibrated it. Turns out that not having it in its printer enclosure led to the spool of PETG absolutely guzzling down all of the moisture in reach and ruined my test prints as I was watching and trying to tune it accordingly, essentially causing a wild goose chase scenario.

Then, I realized the issue and even a solution, which surprisingly nobody has created. My printer setup uses a pair of fixed seat spool rollers (and even if it didn't, all of the other dry box designs I saw used a printed spool holder design that resembled the stock, but wasn't the stock) fitted into a custom roller holder I made a while back held on top of the frame by an adapter I slapped together. I combined the idea for a new roller holder and a dry box together, and now I have this monstrosity. The best part is that any spools can be removed by just lifting the shroud right off, so it's very easy to change filaments at the cost of not being air tight.

Unfortunately, it isn't entirely air tight, since in my case it doesn't need to and I'm a bit short on time, but it should limit how moist a spool can get within a certain time frame by a LOT. It's also got a cool internal frame structure to keep it sturdy while printing! Nifty!