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timbo_heff

Flooded Glaze Bucket

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So a bucket of Tenmoku I had outside took on some rain water.

The bucket had not moved in many months. Crystal clear water floating on top of the settled glaze materials.

I poured off the excessive water:

 

Did that change the glaze: ie are there chemical components in the water that never settle out that I have now just poured off ?

 

Thanks!

 

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It pretty much depends on how the glaze was formulated and also how old it is. If  you used wood ash or carbonates,or borates, you may have soluable components that got washed out. Probably not much changed, but the specific gravite probably changed. Just have to test fire to find out if it changed enough to cause problems.

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If your Tenmoku has bone ash (or tri calcium phosphate) in it then that would be fairly water soluble also. I'm guessing it doesn't contain nep sy as the spar, that would be slightly soluble also.

 

I wouldn't use the glaze until testing it first, way cheaper to replace a bucket of glaze than a load of pots. (yup, I've messed up my fair share of pots by using iffy glazes)

Biglou13 likes this

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If your Tenmoku has bone ash (or tri calcium phosphate) in it then that would be fairly water soluble also.

 

Hummmm....... says here the ceramic grade is non-soulble.

 

http://www.lagunaclay.com/msds/pdf/3rawmat/adry/mtcp.pdf

 

best,

 

.................john

 

 

I have never hear of bone ash being water soluble. However if it actually is, I bet its only the natural bone ash, not the synthetic (which is what most people use).

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Ok testing is king.

 

I was in similar situation. I made a new batch, using over diluted batch as water volume. Had to fine tune consistency but I threw nothing out and had a working product. Sure it's not exact but it worked.

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If your Tenmoku has bone ash (or tri calcium phosphate) in it then that would be fairly water soluble also.

 

Hummmm....... says here the ceramic grade is non-soulble.

 

http://www.lagunaclay.com/msds/pdf/3rawmat/adry/mtcp.pdf

 

best,

 

.................john

 

 

Thank you, I stand corrected. I always thought that it was, good to know it's not.

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