I was searching the Internet the other day for information on forming leather pump cups (related to my airgun obsession) and found the Classic Camp Stoves forum. The forum is dedicated to the restoration and collection of classic camping stoves and has a subforum on practical repair (”fettling”). There are many excellent pictorial postings explaining exactly how to disassemble, repair, make, polish, etc. old camping stoves. The post on making leather cups was quite helpful to me. Unfortunately I threw out my 50’s vintage gas stove over a decade ago and I now regret it, as I could have gotten it back into working condition based on the information presented. It was also nice to find a hobby narrower than my own.