Parametric version also available here for all kinds of customization.

Do you need a convenient way to carry around your essential items? Whether it’s medication, earplugs, or anything else that can fit in a 13 mL space, Keychain Kapsule is the perfect solution.

This model is a simple and elegant container that can be attached to a basic keychain or similar. It has a secure threaded cap that can be easily opened and closed. You can also choose to print a knurled version of the cap, which gives you more grip. Keychain Kapsule is simple, useful 3D print that you can customize with different colors. Consider adding Text with slicer tools to label the container with name/contents !

Printing instructions:

• 0.2 mm layer height works fine, try 0.16 on the threaded sections/cap if you're having any problems with the threads. It's important if you're on a fast printer to slow down in these areas and have good cooling because of the overhangs. Make sure you use a print order of inner/outer/infill.
• Prints fine in PLA or PETG. Shown here in neon green PETG. Try it in glow-in the dark to find your keys in the dark !
• Cap might need paint-on supports if printed in PETG. I used them and it worked nicely, but probably works fine without as well.

Provided in 3MF and STEP formats. Pre-arranged 3MF also provided for Bambu/OrcaSlicer users.

I may remix this to provide a parametric version in the future for people wanting more options.