Excuse me Gentlemen, but am I to understand that a process developed by our forefathers is not to be passed on by mentoring anymore unless we pay our dues?
I am very sure that Oscar would turn in his grave if he was to hear that a fellow artisan was being impeded through lack of co-operation.
How sad that the skill of colour hardening has to be relearned by trial and error, not to mention considerable expense. Because someone who has the knowledge is not prepared to pass it on.
Especially when the OP mentioned that he has paid his dues and bought but unfortunately misplaced his original copy. Where would we be if people had not passed their knowledge on to Oscar?