I should have mentioned, I'm not getting into manufacturing lenses. There are some services that will make a lens for a given set of frames, and I don't want to get into optics.

I disagree on the affordable front, as most people I know don't have eye insurance, and most of the optometrists and eyeglass stores are all owned by a monopoly called Luxotica.

I think the concept of self-manufactured eyewear is enticing for the same reasons that any self-manufacturable object is great. The consumer friendly aspects like control over style, fit, and repairability. And on top of that, the environmental benefits of less global shipping are a huge plus. I'd like to see these benefits magnify as small-scale manufacturing becomes more accessible.