You can buy refurbished and also new-in-box (a bit expensive depending on the model) slide rules from various sites, such as https://www.sphere.bc.ca/test/sruni

You can buy refurbished and also new-in-box (a bit expensive depending on the model) slide rules from various sites, such as https://www.sphere.bc.ca/test/sruniverse.html https://www.sphere.bc.ca/test/sruniverse.html. I thought about getting into hand making them, figured out most of the techniques that I can do in my garage with some components (the end brackets, and cursor runners) being made on a 3D printer. But I'm hung up on where to get the cursor springs from, or what would be a good substitute. One of these days I may revisit the topic.