This model mounts my iphone13 to my binocular as you can see from the pictures. It is pretty sturdy.

Please note that the model only fits iphone13 and my particular brand of binocular.

I made the attachment to the binocular a separate piece that screws on to the iphone case. If we are using a different binocular or any other eye piece for telescope/microscope, only that piece needs to be re-measured and printed (e.g. only change the inner radius of the cylinder).

However, to make it fit for a different phone, the case and the location of the camera needs to be measure properly.

python source code for generating the model:
https://github.com/mingyuanzhang/python3d/blob/main/src/binocular_phonemount.py

Bambu Lab

A1 Mini

No

Yes