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mrcasey

Member Since 07 Aug 2013
Offline Last Active May 23 2017 04:59 PM
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Topics I've Started

Will Lowering Specific Gravity Always Make A Glaze Less Likely To Run?

18 May 2017 - 12:39 PM

Recently we changed bentonites and our newly mixed glazes look way thicker than they used to even while I'm

adding more water.  The specific gravity measurements are a little lower than they used to be and the glazes look

flocculated.  Is it possible that a watered down glaze could run more, simply because it's over flocculated or had too much bentonite added?  All of this seems very counterintuitive to me. 

 

I always kind of assumed that for a given mass of glaze material, adding water would thin the glaze and

make it less likely to run.  Taking out water would thicken it up and make it more likely to run.  That is, if I drop the  

specific gravity, there's going to be more water, and less chance of the glaze running.

 


Deflocculating An Old Brushing Glaze

12 December 2016 - 11:21 PM

We have some old brushing glazes in pint containers.  The glazes haven't been used for

almost 5 years.  Some of the containers are almost full, but the glazes are as thick as

Greek yogurt.  The fact that the containers are so full tells me they haven't lost much water.

I dropped about a tablespoon of darvan 7 into one of the containers, mixed it up,

but it didn't thin out much.  I feel like that much darvan should have deflocculated the glaze.

 

Any thoughts?

 

 

  

 

 

       


Making Pit Fired Pot Food Safe

02 December 2016 - 04:49 PM

Would this give me a pit fired look with a food safe interior? 

 

Create vessel from cone 6 raku clay. 

Put food safe cone 05 liner glaze inside.   

Bisque fire the pot to 05.

Pit fire the pot.