When you look at it you will say "this has been uploaded before" and you would be right. The previous upload was the poor quality file I had downloaded, out of alignment, smugged, and a few pages missing.
I have cleaned it up and repackaged it. If you are collecting these, this is the preferred copy.
To download "How To Make A Folding Machine For Sheet Metal Work" # 1, go to my Books - Free Downloads page. # 69 - 4 MB - pdf.