...I parked my car near a column and in trying to squeeze thru the space, I grated the plexiglass (a-la-parmesan-cheese) against the column. First thought: oops. Second thought: great, now I don't have to freak out every time I use it anymore Lolllllll ...
if the damage it's not substantial. You're perfectly right (of course) about the skin of a shark. The denticles, used in the appropriate direction, act as sandpaper.
..so much so that I've never touched it. It was just a "liberating" feeling After a triple by-pass (a while back) not even the calcium worries me Lollll
matter of fact I started "cleaning up my act" long before the stroke (I did loose 20kgs in 2 years) I could be the testimonial for the Morigerate&Clean living society Lollll