I seem to often reverse the correct description of hot rolled sheet metal vs cold rolled sheet metal.
When I cut out my components with a plasma cutter a heat pattern develops creating ribbons of colors along the cut line. Is that metal hot or cold rolled?

I found a vendor who will produce multiple copies of my hand work on his CNC plasma cutter table. I need to find a way to create a digital file copy of the outline of my original work. Please reply wi