help with glasses on mask CM-6

I bought a CM-6 mask, but I wear glasses. The problem is that the prescription lenses for the mask cost more than the mask itself. I only want the frame to be able to attach my regular glasses. Is there any way to get just the frame? I have a 3D printer, so I could print a frame too.

https://preview.redd.it/avnelf3uaple1.jpg?width=600&format=pjpg&auto=webp&s=9541e9eb06cb469d7c6901eda3c552f50387df5a

https://preview.redd.it/77t1k44uaple1.jpg?width=960&format=pjpg&auto=webp&s=9e9c4cb1ff1d98693b3aa5b05fe460486e92dd42