The complete Amateur Scientist on CD-Rom
When I was a kid, Scientific American always had a science project that people could do in their home shops, usually with normal tools and some scrounging. The quality of these projects was always extremely high. Scientific American stopped putting those articles out sometime in the 1990’s, here they all are. There are thousands of pages of useful stuff and projects to fabricate. This is especially useful for getting info on obsolete projects and dangerous stuff.
Nikon 80th anniversary video.
While the inspection techniques have improved, the basic grinding techniques for grinding lenses hasn’t changed very much.
Here’s a bunch of wonderful glassmaking video. One thing about glass is that you have to work fast before the glass starts to harden and maintain the heat. I’ve never had the chance to work glass, but I’ve watched others many times.