I've started honing my own razors and was just wondering how to tell if they're ready to go to the face. While I was at the South East Gathering, Glen demonstrated one way by "popping" hairs off of his arm from just above the skin. I had a razor honed by him (I'm assuming he performed this test on this particular razor) so I tried it. It didn't work on my arm hair. Are there any other ways to tell?