Finally got some time to learn how to sharpen my chisels using Norton water stones. Really enjoyed the process and results so much that I dug out really old junk ones to sharpen. After about an hour I noticed that the white 4000 grit stone had some red streaks on it. Yup blood, thought I just cut myself. Nope, much funnier - apparently those stones also wear off skin! I have a perfectly flat finger tip! I keep looking at it because I find it quite funny. Anyone else sharpen their finger tips?