Moin! I was just restoring my VW1200. I am a trained car mechanic and had repaired “little things” and also welded. I had already got advice for welding. Once about the book:https://www.shop.oldtimer-markt.de/Praxishandbuch+Schweißen.htm And then also about the YouTube tutorial:https://www.youtube.com/watch?v=-VaBdlTDbcE Theory (on smooth sheet metal) and practice differ however then quite well …. I had immeme between the setting of the welding points. r cooled, tw even with copper sheet and wet rag. Nevertheless, the sheet has more or less strongly deformed. What can this be about? Split distance of the sheets too low? Whereby is spoken in the tutorial of 0,3mm and there are more. Or still too much feed? Thanks and greeting of the “Stevie”