I have not printed this yet and wanted to put the work in progress up.
I think it would be best to be printed at 20% infill with no top or bottom layers to save weight but you can keep them for sturdiness.
The design is based of standard credit card and airtag sizes.
Card = 85.60mm x 53.98mm with 2.88mm fillets on the corners
Airtag Space = 40mm dia x 8.5mm deep
The center most space is a 32mm hole with 1.5mm of an edge.
All sharp edges were removed with a 0.75mm fillet
Feel free to remix this as it is my first thing and post any makes etc.
Airtag_Card.stl | 308.1KB |