Anyone up for that
good idea, don't think it would be too demanding, mild steel is so soft.That would be great to see.
Or define the exact rules/procedure (type of steel, geometry, progression etc.) as well as results presentation method, and collect results from various contributors...
I've got some stones and wish to contribute, but to get comparable results we need to have very precise rules
It would not be an accurate representation of what a stone would be capable of.Thinking of the quality of the mirror polish, which the majority of the stones we use do. And could be easily shown by photo. Also a way to grade the variation in natural stones.
Funny, I had the same idea. Not from a polishing point of view, but because I wanted a better understanding of the relative scratch fineness of some of my JNats, and scratch depth, especially among different lines of synthetics. The vision was a bunch of labeled pieces of steel with scratches from my various stones, that I could consult, under the microscope, to get a preview of what the stone does.Anyone up for that
Ha, yes indeed! The thing with the bevel on that knife was somewhat weird, and slightly annoying as I was trying to put a hazy stone finish on it. I finished on the Ouka and then went to the Naniwa which then just polished out all of the finish I'd put on, so I had to re-do the Ouka. I have much finer stones that do nice haze/kasumi, but learned after that the SS series is apparently known for doing this. In a way it's quite an interesting thing to have though - if you want a mirror finish off a jnat you're spending big bucks on a very fine and hard stone.Yes the apex is more important, but everyone always wants to see the scratch pattern, you know how that goes... It's relevant for things like large knife bevels anyway. Not so much for a razor.
This scope has brightfield, darkfield, polarization and DIC, so it will be interesting. All are reflected light or EPI - so the illumination goes through the objective lens itself. That should make for pretty uniform and repeatable lighting. I am just going to do it for my own enjoyment but I'll share for anyone who might be interested.
For apex examination I have actually gotten some pretty decent results with a regular old biological microscope using built-in bottom illumination, backlighting the apex and providing a very clear view of the silhouette of the edge, like the attached. It is a little finicky to get the adjustment of condenser position and aperture just right, but works quite well.
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