Scary you all say, scratch the paint you say. No, its quite easy really. I use a large snap off blade for large vinyl removal and 2' blade for small. I put them in heavy duty holders and hone them on a windscreen. If you rub with pressure the blade on a windscreen first, at between 30 and 45 degrees, slightly rocking from side to side, they will glide across the paint surface, not take paint with it. DO NOT TURN OVER THE BLADE, as it will grab and make you freak. Slide the blade across the vinyl at an angle Not straight into it. The magic is only in the honing of the blade, always use 1 side only, and good removals all.