I needed to make a slightly larger clip for some classmates stethoscopes. its for the Littman classic which has a 10mm main tube. The Nicolo tag was a great fit for the littman lightweight I used.
Use Tinkercad to add text to the clip
I print it two toned:
count layers in the preview and then switch filament on the layer before it prints the background. looks nice and it readable in your ears or hanging on your neck.