Bike Reflector Hidden AirTag

Discretely protect your bike from getting stolen.

There are 3 total parts to this print (the bottom, the top, and the connector) and all you need are 3 screws to put it together (M3 12s will work).

The bottom part is printed in Hatchbox PETG Black with 0.20mm layer height. Infill can be whatever.

The top part is printed in Hatchbox Transparent Red PLA with 30% honeycomb infill to mimic the reflective pattern found inside real bike reflectors. I made the top layer 0.7mm thick so that the honeycomb pattern was still partly visible without showing the AirTag underneath. The ideal layer height for this print is 0.05mm because the top is slightly angled to look like a real reflector, and a large layer height will show it was 3d printed, a giveaway that it's not a real reflector.

The connector is printed in Hatchbox PETG Black with 0.20mm layer height and 10% infill so that it can be opened slightly to fit around the bicycle seat pipe. You'll secure the connector around the pipe using one of the screws.

The top and bottom pieces fit together nicely and then can be all screwed onto the connector with the two remaining screws.

Reflective tape is common in hardware stores and can make this a functional reflector and not just a hidden AirTag.