I'm wondering if rasps can be sharpened in ways other than etching them with vinegar or acid. I've heard there are services out there that specialize in sharpening rasps. How exactly do they manage to sharpen them?
2 Answers
Yes, they can be sharpened using a pressurized abrasive slurry that works on the back side of the teeth. This method focuses on just one side, which is interesting but might be tough for someone without experience to do at home. By the way, here's a link to a resource about it: boggstool.com.
Honestly, trying to sharpen them yourself usually doesn't yield great results. It's best to send them out to professionals like Boggs to get them sharpened properly. They have the tools and expertise to do it right.