why is this so hard to sharpen?

wittworks

Do you find it difficult to turn a hook on a card or cabinet scraper? A friend challenged me to learn how to turn a hook with his method and to do it under 2 min. Mike thinks I can. I don't think I can. What do you think? πŸ™ Thank you to the top-tier Patreons: Dave Meyer, Shane Cleavelin, Tim Epper