11/12/2017 Scoring & Folding
This scoring process is long and easy to mess up, with many lines cut in error causing a generally messy surface.
But as long as the correct line is sufficiently defined, it should be ok.
The grove depth should be approximately 2/3 - 3/4 through the metal and the line should start to become visible on the reverse.
The sheet should then bend easily by hand.