When I rebuilt my Marmon Herrington gun tractor the entire chassis was disassembled, sandblasted, repaired and rerivetted. I didn't have a lathe at the time to fashion tools but I did have an oxy to heat the rivets and a son who is a builder and very good at sustained periods of hammering.
Colin, yes refitting could be another chapter in my book- 'Mr Jones and why I wished I lived closer to him'.
Carry on with the fine work Sir.
I do have a small lathe now and I get that your tools only require limited use but would certainly last long enough and are cheap easy to replace. Could you detail a bit more about the process of hardening you have used on a new thread so others can get on board and we all might become tool makers.