There’s some excellent advice given by all here! B) If you want even more perfection Quaddy99, I highly recommend adding a 400 or 600/800 Chosera to the mix to really even out those diamond 800/1000 scratches. We’re talking scary mirror finish in the end.
Leo Barr - a couple of clarifying points:
I disagree with is using the 600 grit cleaning stones from the full sized stones for use as a slurry/paste generator unless on the 400, 600 and possibly the 800 stones. On higher grits the 600 is contaminating the action of the stones. Rubbing same grit stones together or using a diamond plate to generate slurry is much more desirable for better finishes. After using a generated slurry, I recommend rinsing the stones and using them again without a slurry - the paste generated from this method will produce a better finish than one with slurry, which is more aggressive (and leaves deeper scratches).
As for the cracking issue - Virtuovice’s videos need to be taken with a grain of salt - he is also the guy who sharpened on a stone drenched with his own blood - seriously. :sick: Curiously, he called the 5K and 600 stones “soft”, which they are, but the 2K is also considered a soft, if not the softest stone in the bunch…
But that aside, his video on the cracked stones are full sized (3x8x1 inch thick) on plastic bases, which may account for an uneven drying since water may pool on the bottom. The ~5" x 3/4" x 5mm thickness of the WEPS stones are much less likely to have that issue since the water can much more easily evaporate.
What alarms me about virtuovice’s video is that ALL of his stones have cracked, which leads me to believe that he is storing them improperly. He doesn’t say how he has stored them, so it is difficult to say what the true cause is. The Choseras stones he has are probably the same formulation as we have, but the Shaptons are an older, M series, which are not currently available in the US (I don’t know if they are still available in Japan). Overall, I have never heard of widespread cracking on either brand.
Back to the discussion at hand, the issues of the Choseras for the WEPS cracking are practically non existent since we started. I think we can count on one hand the small number of cases that were not caused by user error, and they were more weird, isolated anomalies than anything. Most often, the cracks are caused by dropping paddles, bending the WEPS stones, and by smacking the stones against the knife too hard.
However, given the very few reports over the years of full sized 5K and 10K Choseras cracking, I would not recommend soaking them indefinitely, or putting them in direct sunlight or leaving them prolonged in an uncontrolled environment, such as in water in an unheated garage near the south side window in winter. :cheer:
I hope this helps!