Such as? Which tool exactly that doesn't leave any marks?
Most of them when used properly. Not to mention whatever Mark's are easily weathered away.
A lot of blocks haven't suffered weathering because they was burried.
This is utterly false. No cuitting tool on earth doesn't leave any marks.
If we are just talking easily visible Mark's then you are wrong. I do it all the time.
No, we are talking microscopically.
