If you have been working in a sheet metal shop, plan to work in one, or just want to sharpen and improve your skills with sheet metal then this manual will help you to do that. The goal of this manual is to help you gain an understanding of precision sheet metal layout and show you how to do flat pattern development while becoming more efficient with math in the shop. Therefore the first part of this manual deals strictly with math that is related to sheet metal development. Geometry, Algebra an