I had surgery and needed a way to keep mask strap in front of my face.

this can be scaled in x,y direction to slip on more glasses sizes. Or request in comments and I am happy to change the size of the hole. No guarantee on amount of time I take to get to it.

Should work on any FDM printer.

Use supports. They are pretty easy to pry out of the hole.

PLA was sufficient, but feel free to try other plastic types.

Tips: CashApp $TheoBenge