credit card size 16 micro SD card holder

thingiverse

It's roughly the size of a standard credit card, making it easy to slip into a book-style holder without wearing out quickly. The design prevents cards from falling out by themselves, but they can be tricky to remove at first. To lift one out, simply use your index finger's nail and slide it out with your thumb on the other hand. A single line of support is required below each card slot that extends over the card, and a thin utility knife comes in handy for removal. The printer settings, material used, and luck all play a role in determining whether printing will be successful without additional support. The second hole accommodates a straightened paperclip, which can be used to open phone card trays or reset certain devices. To create the tool's end, bend it into shape and then cut it to size before blunting the tip with a file.