the other thing is that people would do the most menial task for years before they even got to touch anything of value. Even at Trek I did menial tasks until one of the brazers lost his temper and tried to burn someone with his torch and I took his spot. I would work with someone that has demonstrated metalworking skills. I wouldn't take on someone who got the idea of building frames from looking at the price lists of a well-established builder and had previously failed to demonstrate any capability to work with their hands. The minimum would be a competent bike mechanic that could do the final prep and assembly.