You'll find many many examples of scratches on cars caused by the blades. If you aint got any yet, its only a matter of time.rehmondo wrote:Your theory will also apply to anyone using any sort of cloth then? The smallest dirt/grit particles will be trapped by the cloth/micro fiber and as you happily go around drying the car you will in fact be dragging the dirt along with you?
But you do say you use a sponge, so you're obviously not that fussed about any marks, cos if you were you'd be using a wash mitt.
The best (least risk to the paint anyway) way to dry a car is to pat dry with a plush towel, you'll get next to no swirl/scratch marks with this method. I personally use some last touch sprayed onto the car while drying to aid the process and reduce the chance of marking.
You'll find the white paint on the car very very forgiving, if it was black, you'd soon stop using a blade cos you'd see marks all over the place!