[Cold Heart]

I wrote a high school paper on lens grinding (40 years ago) and am still at awe with amateurs that grind their own. I could probably make one that could be use as privacy screens in leaded glass art.

[Riley]

When I belonged to the Chabot Observatory, they had classes for it, and mirror-grinding. It was pretty straightforward- just required a lot of elbow grease. They had all of the necessary instruments for checking your work as you went along, and lots of helpful people to get you on the right track. Great bunch of people.

[hopespringseternal]

I do mirrors. It is one radius of curvature independent surface vs. four to six interdependent surfaces in an objective lens system for a telescope.

I recently got plans for a (mirror) grinding machine. I am almost scared to put the thing together, for fear of what I might do with it and how much money I might end up spending on building telescopes.