Mr. potato top is back!
When I said it failed on the potato top grind, it’s because I wasn’t able to feel it, but I didn’t actually do any measurements. I started to doubt myself as I couldn’t feel the Toyama potato topology either. Now, after extensive analysis, I am happy to report that the potato-top grind is real, & I can prove it!
To test this, get a metal ruler, preferably the triangle type that’s more resistant to warping. Lay it on the middle of the bevel of your Toyama iron-clad or Kato WH, while allowing the knife to lay on a flat surface as shown in photo #1 below.
Lift the ruler up on the edge of the ruler over the potato top area with back-lighting. If the potato top grind is there, you should be able to see lights coming through from both side of the potato top.
With that, I am able to prove, not only my Toyama iron-clad has the potato top grind topography, My Toyama-like DIY does as well, & it’s even more pronounced.
Metal ruler for gap analysis
Toyama iron-clad, the dark area with no lights coming through is the potato top.
Toyama-like DIY Dammy, with slightly more pronounced potato top