Dual Spool Dry Box from IKEA 10.6l Food Container
Description
I have found that a dry box makes a huge difference to the quality of 3D prints when you're living in a subtropical region. A hygrometer in the room now is reading 60% humidity, with filament dried in a food dehydrator and placed in a dry box with desiccant the humidity is constant at 18%. I started out with the dry box design by Sp4wN (https://www.thingiverse.com/thing:3320749) but found that the base for the rollers would not fit flat onto the Prusa Mini build plate. I was able to print the base by having it at quite a steep angle and using supports. When I added the rollers I found that my filament spools could jam as they can slip between the end of the roller and the frame. I could have amended the roller with a lip to stop this happening but the print time for the base was too long for my liking. My first attempt to achieve a quicker print for a base was to amend the Prusa Mini spool holder by extending the rails and having two additional central base pieces. This works well but the base of the IKEA container is not wide enough to allow the use of two 70mm filament spools. Fortunately I came across the amended Prusa spool holder designed by ProduktTester (https://www.thingiverse.com/thing:4592575) and realised that if I made a slight amendment to add a central support and reduce the size of the roller I could accommodate two 70mm filament spools. This did create a slight issue, the spool holder sits 3mm above the base of the storage container and as such it is only supported at the edges. When two spools are added they tend to lean towards the middle and rub against each other, this is why I printed a 3mm thick support to go under the central support, now the spools sit correctly. I amended the silica gel container created by Sp4wN to remove the rear curve and extend the container. The container can now hold 250g of desiccant. To accommodate this increased size I designed a new lid. I have used straight through PTFE connectors so that I can push the PTFE tube into the box to stop the filament rubbing against the connector. To securely fix the PTFE connectors to the box I've designed an oversize nut and tapped it with an M10 thread which is what my connectors have. For each dry box you will need, - 1 IKEA 365+ 10.6l food container with lid (I won't quote part numbers as they vary by region but the container is 32cmx21cmx23cm) - 8 608ZZ Bearings - 4 M3 x 8MM Hex Socket Head Cap Screws - 2 straight through PTFE connectors - 1M PTFE Bowden tube, cut in half. (4mm outside diameter, 2mm inside diameter). - 1 Rectangular Hygrometer (46mmx28.6mmx15.2mm) - 4 Non slip feet
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