This is a simple adapter for the Garmin 2.3mm pinhole, to shift the size down to 1.5mm. I made it for a Garmin Forerunner 965 and a spigen Galaxy watch band.

The pin does not contact the walls of the pinhole because it has a 0.2 mm bottom layer.

I printed it using a 0.2mm hotend from ASA. I was not sure if TPU could be used for such a small item.

For the perfect fit, the bottom layer had to be profiled a bit.