The reason I ask is because it's a "backburner" project I've wanted to finish for a really long time. I have always wanted an easy-reference chart of local or on-line suppliers of materials and processes to refer to. Mostly for work (aircraft specialty modifications) where we find ourselves needing to specify a lot of very different materials and processes, and call up a qualified supplier for each. I actually have purchasers here who have a better handle on it than me, but what they don't do is summarize what they know by writing it down. They just have it in their head!