Quote:
Originally Posted by Cootey
J...
Another interesting thing that I’ve noticed is that the nibs leave residue on the screen like graphite. At first I worried that I had actually damaged the screen because they were smudges from my extensive sketching on the actual substrate. However, it all washed away with some Windex. Now that I’ve noticed the nib wears down, I know where all that smudging came from.
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I believe the substrate is under the screen, the light guide layer, and even further down. You can't scratch it by drawing on the screen.