How to 3D print a custom name keychain (no CAD)

A name keychain is the first thing half of us try to make when we get a 3D printer. It's also where a lot of people bounce straight off the hobby, because the "just model it" advice assumes you already know Fusion or Blender. You don't need either.

The keychain itself is trivially simple — a rounded tag with a name and a hole. The annoying part is that doing it in CAD means learning sketch constraints, extrudes, text-on-a-face and fillets just to make something a five-year-old could describe. That's a lot of yak-shaving for a gift tag.

What actually makes a name keychain printable

Here's the stuff that matters, and the stuff nobody tells you before your first one comes out unreadable:

Font weight. Thin, elegant fonts look great on screen and print like mush. On a 0.4 mm nozzle, any stroke narrower than about 1 mm gets rounded off or skipped. Go bold — heavy, chunky letters. It's not just aesthetics, it's what survives the nozzle.

Raised vs engraved. Raised text (standing proud of the tag) prints cleaner and reads better than engraved, and it's the one that lets you add a second color later. Engraved letters trap shadows and fill with dust. Raise them.

The hole. Put it where the ring won't cover a letter, and give it real diameter — 4–5 mm — so a standard split ring actually fits. Too small and you'll be filing it out with a drill bit; too close to the edge and it snaps off in a pocket.

Thickness. 3 mm is the sweet spot. Thinner flexes and cracks at the hole; thicker is just wasting filament on something that lives on a keyring.

The lazy way (that gets all of the above right)

This is exactly the kind of part I got tired of rebuilding in CAD, so the text keychain generator here just does it: type the name, and it hands you a tag with a bold readable font, raised letters, a properly sized hole, and sane thickness — as an STL to print, or a 3MF if you want the text a different color than the tag.

No account, no CAD, no measuring. Type "MAJA", pick a font, download, print. The boring-but-important stuff — feature sizes, hole placement, corner radius — is already dialed in so your first print is actually usable instead of a lesson.

A couple of print tips

Lay it flat on the bed (it's designed to). No supports needed. If you want two colors — tag one color, letters another — export the 3MF and do a single filament swap; I wrote up how that works without an AMS if you haven't tried it.

For a batch — party favors, a classroom set, bag tags for the whole family — generate each name, drop them all on one plate in the slicer, and print the lot in one go. That's the moment a generator quietly beats CAD: twenty names is twenty seconds of typing, not twenty modelling sessions.

Make one for your keys tonight. It's the fastest "yes, my printer earns its keep" project there is.