Hi, Folks!
I made a jig to sharpen tools requiring a fingernail grind. It works great, except that the angle isn't quite the same as the original grind. For example, if I set the center of the grind on the tool against the stone and adjust the tool so the grind is correct there, then do a grind from the wings to the center, the center is ground correctly but the grind on the wings does not extend all the way to the cutting edge. I suspect this is simply due to the difference in dimensions of my grinding tool vs. the original jig. I'm tentative about sharpening my Sorby bowl gouge on this tool, though, because I like the grind of the edge and don't want to change it. However, it needs to be touched up. Is there a method I'm unaware of that can be used to find and emulate the original grind angles? I know this is a function of the length of the leg on the jig, the degree of extension of the tool through the jig, the size of the wheel, and so on. Just wondering what you folks do. Advice?
Thanks!
Rob Miller
Scottsdale, AZ