AirTag wallet card holder slim credit card size
A credit-card footprint (85.6 x 54 mm) card that holds an Apple AirTag (31.9 mm diameter, 8 mm thick) in a wallet card slot so the wallet can be found in the Find My app. The AirTag sits in a 32.2 mm pocket in the centre and the two halves snap together around it with a 0.15 mm lip, leaving the card 9 mm thick at the bump and 1.2 mm at the edges so it still slides in beside real cards. Speaker holes are optional and both halves print flat.
An AirTag card downloaded from a general site is often too thick or cracks at the snap. In SpeakCAD you describe your wallet slot and whether you want a speaker opening, preview the card free in the browser, refine the snap in the chat, then download the STL and print it in PETG.
Create a two-part 85.6 x 54 mm card with a 32.2 mm diameter, 8.3 mm deep central pocket for an AirTag, 1.2 mm thick edges, a 9 mm thick centre bump with 3 mm blend radii, a snap-fit lip with 0.15 mm clearance and six 1.5 mm speaker holes.