Remixed the original design by Knerdler to allow for any generic frame glasses to be mounted with some vertical adjustability.

Recommend printing the frame with a black material to reduce internal reflections, I used both PLA and PETG and both seemed to work fine. Clasp needs to be printed upside down with supports since the bottom has complex geometry.

I added some electrical tape around the nose bridge of the glass to allow it to stay in place. Depending on the design of the glasses you intend to use, this may or may not be required.