OK!! The dry box project is now functional. The first pic is the overall setup - pardon the mess in the background. The upper filament flanges where a first design where the box was going to be below the printer and that is why they are angled up. For now it will sit behind the printer hence the lower flanges. Five rolls can be loaded at once each on its own roller base making changes easier.
The feed tubes go into the manifold on the back of the printer. The manifold has plugs for the filament that is not in use. The filament goes up through a small hole in the plug which allows you to grab the one you want and feed it from there rather than opening the dry box.


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A closer look at the manifold and the plugs. Also my first attempt at knurling.

The tubes go in between and further out from the back of the two spools on the back of the printer allowing easy access to throw on a roll for a quick (in 3D printing terms) print.


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ON the inside we have dual rechargeable desiccant packs and a temp/humidity sensor in the middle.

Each roll is on its own roller base so change out is easy and quick. There is also storage space behind the active rolls.



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Here is a close up of how the filament holder/plug works. I am guessing not much humidity will get past this.


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