I've been building things all my life, nearly 64 years. It's good to read about what others are building and get more (oh no, as if I didn't have enough) ideas.

Looking forward to sharing some of my ideas too. Actually I already have a tool on this site. It was posted by someone else quite a few years ago after I shared the idea on a homebuilt aircraft forum. See Homemade High-Speed Drill from Blower

Aaron