Thread: Cracked My Naniwa

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..........