Designed in Fusion360. These caps will fit standard Schrader VG 8 threads. I have printed these with a .2 nozzle and the fit is nice when installed. They go on easy and tighten down at about the point where the cap meets the rubber on the valve stem. They have a nice sturdy feel with good grip while not being overly bulky. I have placed a smiley on the top but these can be printed in a single color without issue. My profile has slower speeds to help with detail and stringing when using PETG. I choose PETG as these will be mainly outdoors all the time. I would imagine PLA would work as well but might not hold up over time. Print profile includes a set of 4, though I would recommend adding one or 2 to the plate to have as spares just in case.

SAMPLES:

Bambu PETG-HF Yellow

Overture PETG Black

Textured plate

TIP: Smooth plates can provide better image quality