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My initial tests (on knives) with the two larger oilstones indicates that these are nice, reasonably fast hones around the 2-4K level. They're very consistent, and I see no evidence of inclusions....

I don't think the slurry I was seeing was grease/water emulsion. It looked and felt like real slurry. I now think these are relatively soft Arkies. Probably not razor-worthy, but I will use them on...

I'm now leaning towards identifying the two larger oilstones as Arkansas stones as well. After I smoothed them a bit more, I think they may be be soft Arkies. I tried a couple of knives on them, and...

One more bit of data on the two larger 'oilstones': when I rub them against each other (when wet with water), a thin white slurry is raised pretty easily. I don't know if that's because there may be...

Thanks! That sounds probable. I wonder if this is a usable size.

I've had several types of Arkies, and the two larger oilstones do not look anything like any of the ones that I've handled. However, I've only used new ones. With age and soaking in oil they could...

Continued.......

Not much to see there.

Here is the largest one after lapping. It is about 6.5" x 2" x 1".

Dry:
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I mentioned in my other thread (on the slate hones I found) that there would be a second thread about the other hones I found. Here they are.

I recognise the coticule natural combos, of course,...