Has anyone ever done this? I use all manner of random stones to slurry on mismatch cousins from different continents fairly often but I'm new to jnats and kinda perplexed with the because they're beautiful, even the crappy ones. I've used a finger stone that @cotedupy sent me on a Charnley and a suspected llyn idwal that is pretty soft for novaculite. Softer than any of my Washitas and as fine as my black ark. Has anyone used jnats as nagura with a black/ trans ark or some other very hard non jnat as a base stone? I've done it and I'm aware that it can be done but does anyone hey do it with regularity? When i got the tip of using Tam O'shanter slurry on a Charnley or llyn idwal it was a complete game changer and it got me to rubbing random rocks together. Im dipping my littlest toe into the jnat hole but I like to hear everyone else's experiences. So, anyone done this regularly, with repeatable results with jnats as slurry stones with a black ark base?