Water absorption and saturation is pretty rapid, making this stone close to a splash and go type stone. Slightly porous. It does retain metal swarf similar to the 320 Bamboo or JNS 320 stone
I begin by continuing to refine the edge left on a knife after a chip repair on a 180 grit Nubatama stone. This is a 330 mm Tojiro gyuto, a stainles VG10 type steel.
Very smooth stone, fine mud, quickly generates metal swarf.. Acts like a fast 1000 grit stone. Doesn't generate a lot of mud - between a Shapton and a Chocera.
I spend some time demonstrating changes in sound as the edge is refined and the stone surface becomes smoother from the stone's initial surfacing. I mention the lack of necessity to generate burr with every stone.