Someone here that can share their 'hands on' experience regarding cutting sheet metal, steel vs brass? will have access to a CNC router in a month or so ('CNC-Step', 1050w Suhner motor), so just planning ahead) To make some parts of sheetmetal, it can be carbon steel or brass. Like 0.5 to 1.5mm thickness mainly. I know about the theory, cutting speed tables and so on, but in the practical world is it so much less troublesome and quicker to cut brass vs steel, that it's worth the x5 (or whatever) cost of brass?)