I've been on a sharpening kick lately and really appreciate all the helpful feedback from everyone! So here's another question: If my tool has a secondary bevel, does the condition of the primary bevel really matter? For instance, if the primary bevel is a bit rounded or not perfectly flat, should that affect my sharpening results? As long as the back of the blade is flat and the secondary bevel is getting a burr, I think that should be fine, right? I'm looking for clarity as I'm noticing improvements in my sharpening skills, especially with my bevel and mirror polish. However, I'm still having issues once the blade goes back into the tool and I'm trying to make cuts.
2 Answers
It's ideal to have a flat or hollow primary bevel because a well-shaped primary helps keep the secondary bevel from getting overly large too quickly. If the primary bevel is convex, it could create a shallower perceived angle. Just make sure your primary angle is down to around 20 degrees; that works well if the secondary isn't too tiny!
If you're having issues with your tool, it might just need a better setup. Many primary bevels are established with a hollow grind from a bench grinder, which can be good. Concave shapes are typically fine, but a rounded primary can complicate things. Don’t overthink it; just pick a sharpening method that works for you and stick with it!
I'm currently working through my method and figuring things out!