EDC Mini Knuckle Keychain

Why I Like It

Standard key rings are a solved problem that somehow still manages to be annoying every day — they split nails, they won’t lie flat, and they rattle. The EDC Mini Knuckle Keychain replaces all of that with a grip-first design that’s actually pleasant to use. The knuckle contour gives you purchase when you’re pulling keys out of a bag in a hurry, and the body keeps everything from spinning loose.

The “mini” in the name is accurate — this is a compact form factor. Scaling is built into the design philosophy, and your slicer is your friend here. If you run larger keys or fobs, scale up 10–15% uniformly before you print. If you want a tighter, more pocket-friendly carry, scale down 5%. Either way, print at 50% infill with 4 perimeter walls minimum — the key attachment points take stress every single day, and you want material there.

PETG is the practical choice for this one — tough, slightly flexible under impact, and available in a range of colors if aesthetics matter to you. Print orientation matters: flat on the bed, no supports. First layer adhesion is critical on this shape, so a clean bed and proper Z offset make the difference between a print that pops off clean and one that warps at the corners.

What Filament Should You Use?

Here’s a quick breakdown of the three most common filaments for EDC gear so you can pick the right one for your setup:

TL;DR: Use PETG for most EDC prints — easy to work with and tough enough. Use ASA if the piece will live outdoors or in direct sunlight. Use ABS if you need maximum rigidity and heat resistance and have an enclosure on your printer.