Mini Container with PET Bottle Cap - 3D Printed Organizer

Design preview. Rendered from the file, not a photo.

The maker says it fits: PET bottle cap (standard commercial). See the proof

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What it does

Fits standard PET bottle caps, swap in your favorite cap anytime
Three design variants: normal, slit (1mm), and knurled versions
Compact 30mm outer, 23mm inner diameter, perfect for small parts
Ideal for silica gel packets, 608ZZ bearings (holds 4), or pills
Screw-top closure keeps contents secure and moisture-free

This mini screw-cap container is one of those cool 3d printed things that solves a dozen small storage problems at once. Designed to fit standard PET bottle caps, you can customize the look by swapping in any cap you have on hand, or print the included cap in your choice of finish.

Choose from three cap styles to match your needs: a smooth normal type, a slit version with a 1mm opening for dispensing, or a knurled design for extra grip. The compact size (30mm outer diameter, 23mm inner) makes it perfect for organizing tiny essentials like silica gel packets, small hardware, or even 608ZZ bearings, it holds exactly four.

Whether you're building out tool organization for your workshop or just need a clever way to store pills and pocket items, this versatile little container delivers. The threaded design ensures a tight seal, and the modular cap system means you can mix and match styles across multiple containers.

52k downloads in the maker community. That is interest in the design on the site it came from, not our sales.

What it fits

The maker says it fits: PET bottle cap (standard commercial)

That is the maker's word, not a fit we measured. Check the size below against your own.

PET bottle cap (standard commercial)From the maker's own listing title, checked 2026-08-13. See the original post

Brand names here only say what this part fits. We are not connected to those companies, and they did not make or check this part.

What you get

This design prints as one piece.
Nothing else to print or buy for this to work.

What it is made of

Designs like this print well in PLA. Compare the materials.

Printed plastic is strong for its size, but it is not metal. We have not load tested this design, so we do not publish a weight rating. Keep it out of a hot car and away from open flame.