No kidding. There is a whole world of cast , forged and billet repair out there. Besides a gunsmith. Remember the people that actually welded scrapped Garand receivers. Now that was a restoration job. Nothing compared to say printing press restoration. Obsolete domestic machines are one thing. Obsolete German machines are something. Anyway there isn't anything wrong with being impressed with someone that can do what you don't understand. Gunsmiths are impressive but not that amazing.You don't just grab any old rod (or load any old wire) when working on the type of weld the OP had done. Entirely different than when I had my son weld the buttplate back onto my AK.