I have 4 big Ikea Samla dryboxes, but I was looking for a smaller container for my flexible filaments. Ikea has a new food container which is great for standard size spools and the lid is airtight.

The container is stronger than a Samla box and can be put in microwave till 100°C.

Ikea article numbers for the container:
Complete container with lid: 792.767.60
Only 10.6L container: 103.930.64
Only lid: 303.930.63

Usable spool sizes are between 165mmØ - 200mmØ and 70mm width.

You need 8x 608 bearings and 2x 156mm long 8mmØ rods (or threaded m8 rods).

Do not use hammer or anything else to put the bearings in the rollers, you can press the bearings in both sides, otherwise you will damage the bearings and can’t put the rods through.

Use 4mmØ pass through fittings, this way you can put the tube through the fitting into the container, I had some problems in the past using standard fittings with 4mmØ tube hole and 2mmØ pass through hole, the filament was getting hold by the fitting in the container, now you can put the PTFE tube through the fittings and won’t cause any friction.

ADDED: Made a lid for the silica gel container after a request, it was a quick sketch and it is up to you if you want to try.

ADDED: A short video while printing flexible from the Drybox https://www.youtube.com/watch?v=LAOWK8IUXY4

Optional:

• If you want to use my design nut with filament guide, tap m6 thread after printing and drill a 6mm hole in the container. See the pictures for reference.
• I also designed a small container to put silica gel in and mount a hygrometer on it, it is up to you if you want to use it or just put the silica gel in the container.
• If you can’t find a metal 8mmØ rod you can print the provided 8mmØ rod, but I highly recommend to get a metal rod.

The rollers, silica gel container and the nut with filament guide needs to be printed with supports.

Parts:
608 bearings:
https://www.aliexpress.com/item/10pcs-608zz-Deep-Groove-Bearing-Steel-Ball-Bearings-With-Grease-For-Skateboard-Roller-Blade-Scooter-Inline/32851756066.html
https://www.amazon.com/dp/B00NX23HGQ/ref=cm_sw_r_tw_dp_U_x_t84jCbBQPG806

8mm Rods:
https://www.aliexpress.com/item/1pc-8mm-8x200-linear-shaft-3d-printer-8mm-x-200mm-Cylinder-Liner-Rail-Linear-Shaft-axis/32713267462.html
https://www.amazon.com/dp/B01MUPAYTR/ref=cm_sw_r_tw_dp_U_x_X-4jCb2B2WC1X
https://www.amazon.com/dp/B01M9D9EDS/ref=cm_sw_r_tw_dp_U_x_Cc5jCb3JWK8T0

4mm pass through pneumatic fitting with M6 thread:
http://www.aliexpress.com/item/PC4-M6-Pneumatic-Connectors-Tube-Through-4-2-Tube-3D-Printer-Pneumatic-Fittings-PC4-M6-Bore/32877007745.html
http://www.aliexpress.com/item/3D-Printer-Part-V6-J-head-PC4-M6-Black-straight-through-pneumatic-connector-1-75mm-PTFE/32896773675.html
https://www.amazon.com/dp/B01GCDQ2FK/ref=cm_sw_r_tw_dp_U_x_Kj5jCbWQ16T2K
https://www.amazon.com/dp/B07MKDFYM5/ref=cm_sw_r_tw_dp_U_x_Ok5jCb6BZSV58