This 3D-printed Micro SD card case securely locks itself and keeps your cards perfectly organized.
The lid can be easily opened with a press of the release button and a quick quarter turn — simple, reliable, and satisfying to use!

The case holds up to 10 Micro SD cards, each in its own numbered slot for easy identification.
You can attach it to a lanyard or just toss it into your backpack — thanks to the locking mechanism, it stays firmly closed no matter what.

The upper section with the latch consists of two parts that snap together. The easiest way to assemble it is to place the top part on a flat surface and press both pieces firmly together until they click into place.

Features:

• Holds 10 Micro SD cards
• Self-locking mechanism with push-button release
• Numbered slots for easy organization
• Can be attached to a lanyard
• Compact and durable design — perfect for travel or everyday use
• Easy to print and assemble

Recommended print settings:

• Material: PLA or PETG
• Layer height: 0.2 mm
• Infill: 15 %
• No supports required

Update – October 25, 2025
I’ve added an additional slot in the lower part of the SD card case to store an SD card adapter.
Please check the second print profile for this updated version.