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So here is the set-up, i took my cold naniwa 8000 and put it in a slightly less cool water to soak it. Heard like a pop 3 seconds later, took it out and the stone has a crack runing straight across exactly half way through the stone. so i lapped it down ant honed a razor on it and it didnt catch or anything. So my question is why did it happen? do i need to bring the stone and water to room temp before using? and will there be any problems using as is? sorry no camera so no pics.
I was looking closely at my Naniwa 8k, and I think mine may have a crack in it as well. I can't feel it, and it doesn't seem to affect honing at all. It appears as a little black line that did not come out when I lapped the hone to clear the other blackness on the surface. I'm still debating what to do about it...
my crack looks exactly like my pencil line (.38 graphite) when i lapped it but it runs down the sides and i assume all the way through. i couldnt catch it sliding my finger nail across it and like i said it didnt affect my razor in the bit.
Yikes!!!!
Do Not Soak These Stones!!!!
They are not meant to be soaked. Soaking them will ruin them. All you need to to is spray them with some water and hone away.
Lynn
That is the first i heard this Lynn. I thought will all the water stones you were supposed to soak them before use. I dont leave it soaking all the time just put it in like 5 or 10 min before i use it. Well right there might be the problem then.
My Naniwa Chosera's came with instructions to soak for about 20 minutes but no more than 40 minutes. (These were written in Japanese on the side of the hone.)
So far no trouble with this in all the months I have used them.
The Chosera should be soaked but not left in water for an extended period as they can develop fissures. The Super Stones should not be soaked and only sprayed (or whatever method you use) with a film of water.LynnQuote:
Originally Posted by ZethLent
Yes this goes for the Naniwas and Shaptons. Right from the Companys mouths DO NOT SOAK!!Quote:
Originally Posted by Lynn
My mom spanked me so hard once she cracked my Naniwa. I guess I deserved it.
Others replied to the "Do not soak point".Quote:
Originally Posted by UtahRootBeer
With winter on us here in North America dropping a cold hone
from the garage into a bucket of hot tap water would be a blunder
as would placing a wet hone in a freezing garage.
i.e. a risk not worth taking...
From one who makes his living with heat exchangers, extreme temp changes can create quite a bit of damage to many pieces of equipment such as water jackets, engine blocks, freshly laid masonry and heat treated refractory products.
Avoid temp changes for your stones by storing them at ambient room temp and also maintain your water at the same temp. I'll bet you would rather jump into a swimming pool of 90 degree water than you would want to jump into a pool of 30 degree water. What a shock that would be to a 98.6 guy like you....
If you're not sure whether a stone should be soaked or not, pour some water on its surface. If the water is immediately absorbed by the stone, it probably needs to be soaked. If the water remains on the surface of the stone without being absorbed, soaking may not be necessary.
My advice is, keep buying hones until the cows come home..........:)
That really doesn't give me much time... Some of the city dwellers may have lots of hone purchasing time, but here the cows come home twice a day.Quote:
Originally Posted by mrsell63
Well then sir, I suggest you milk them there cows twice a day....
I came down from the mountain and sure as shootin', I wished I'da stayed up there.......... Seymour
Naniwa Superstones are resonoid and should not be soaked. I'll admit that a small amount of time (like 1-2 min) in water does make them feel and work better but it's still not what the maker wants you to do and they warn against it.
Naniwa Chosera are sintered stones which need a short soak of about 20-30 min, just enough to allow the surface to absorb enough water that it will expel it as lubrication when pressure is applied. Since pressure isn't used while honing razors a longer soak time may be required to soften the surface a bit. It's a fine line between just enough and too much though, some of the Choseras turn to mush with too long a soak.
I think in the case of the original poster's cracked stone I would attribute it to temperature differences between stone and water although that's obviously just a guess.
Dave
Good Points, what i do is while I am setting up I will put it under the faucet and let the water trickle on it till I am ready.Quote:
Originally Posted by DaveMartell