Yes sir. I’ve never been a fan of water on hard novaculite, so I always use oil. When I get time I’m going to rough the surface up a bit and see what that does.Have you tried it with oil. I have a similar looking one that is useless with water but much much better with oil.
Very very similar to one of mine in terms of colour.What a difference a day makes. Under all the funk, there is one beauty of a stone. Gave it a good bath to remove any oil sludge. Worked the bottom with a wire brush to remove most of the remaining cement. Spot treated with a scotchbright pad and 220 W/D to finish off without being to aggressive. It has some tool marks (chisel??) on the side that I wanted to conserve. Lapped up to 600 to see where it stands. It was hard lapping, but not trans ark hard and like the results. All the colors and veins are popping. It is a looker, now to see how it performs
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Took for a test drive dressed at 600 and felt like it was missing something. Took it up to 1200 and that was the sweet spot. I got a polished, reflective surface off the plate. My LED lights bounce off the top nicely. The color is also more green than blue-green. Using water and one of my usual test blades, I got a impressively comfortable shave. Has a light velvet feedback, almost nonexistent. It is a slow stone. Used some pressure to start and feathered to only the weight of blade to finish. Going to try some glycerin and light oil to see what else I can squeeze out of the rock. There’s more there, just need to find it. After just one use, I declare this is a worthy keeper. Hope the Arks don’t get jealousVery very similar to one of mine in terms of colour.
If it's any help: I lapped mine a bit higher - to 1000 grit. I use it with water. Sometimes I raise a slurry on it. It's my favourite CF and follows beautifully on from Welsh slates, producing the sweetest edge.
I hope yours hones well. Keeping my fingers crossed.
That looks much more like a Lynn Idwal to me - also a British novaculite - but could be one of the "earlier" khaki charns and it's just my monitor.I've been getting to know this Charnley for a couple of weeks now. Surprised by how slow the stone is and also how fine. All preconceived notions out the window.
It had a crowned sharpening face that took some time to lap with wet dry paper. I learned that the lapping went much faster with full body weight on the stone.