28-04-2019, 08:18 PM
I found Daivd Gardiners instructional DVD to be excellent, it also has the approval of my personal guru Joss Cambell! You can find and purchase it online. For further reference a book worth seeking out is " Professional sheet metal fabrication" by Ed Barr also very good and fully Joss approved, covers everything you need and more.
Black Art Enthusiast