Two labeled Washitas, all cleaned up, dead flat.
The cleaning process was interesting. The first stone I got was left splotchy after a long simple green soak and flattening. Wondering if the stone is heterogeneous, if the first owner used it more heavily, with different oil, or what. The newer stone that
@cotedupy IDed as a lily white has a more even distribution of leopard spots. It was definitely used heavily, due to the dishing and gouging at the edges.
The first Pike is noticeably harder, and took about twice as long to lap. The sharpening leaves little tactile feedback, and even when sharpening a Forgecraft, you need to lean into it to make much progress. But, I think it’ll burnish and hone to a finer edge.
Visually, the harder Pike stone is just totally opaque, no hint of translucence. The softer Norton has a hint of depth/translucence, and a sort of butterscotch color lurking under the surface. Not a ton, but it’s there.
The second Norton lapped flat pretty quickly, in about 30” with SiC powder. It feels grippier on the fingertips after lapping.
The sharpening feedback is similar as well. With both lapped coarse, the harder Pike causes the knife to “skate” across the bumps a bit, where the softer Norton is a bit grippier, gives a mores stable feeling.
Surprising, when I stacked them up to some unknown stones … I like the unlabelled stones better.
The third bench stone was an ebay find, and has definite translucent qualities, and some fissures on one end that are really pronounced viewed head-on. The chipped corner shows a layered, fracturing structure instead of a more granitic, crumbly structure like the hardest Pike stone. The Norton isn’t really chipped enough to tell, but it seems in between. The unlabelled Washita is lapped smoother than the first two, and has a nice, even feedback.
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The travel stone I inherited from my grandpa also has a translucent quality and sort of a flakey texture rather than bumpy, when lapped coarse. It has a strong butterscotch color that I think is just part of the stone, not an artifact of oil (no change in color during lapping). Excellent tactile feedback.
Last but not least is the combo stone. The surface is lapped smoothest of all, but also provides a really nice, smooth, tactile feedback. It probably has the most pronounced translucence of all the stones. Leaves a clean, bitey edge, but not the first choice for hogging material off (that’s what the India side is for!)
I’m still not sure how/if all these correlate with sharpening, but in general it seems like the features that make me like the stone best are some translucence and a flakey substructure.
If I had my way about it, I would chip the corner off any stone I wanted to buy, and see if it crumbled like cement or knapped more like arrowhead novaculite, favoring the latter.
Just my rambling thoughts after a long week of work.
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