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JBaymore

Member Since 06 Apr 2010
Offline Last Active Today, 09:17 PM
*****

Posts I've Made

In Topic: Duncan Gold Luster Question

Today, 01:22 PM

I personally has some BAD issues with breathing luster carriers (even with decent ventilation and protective gear).  But each manufacturer has their own blending of that stuff.

 

Suggest you read the MSDS for the materials you use.

 

http://www.duncanpai...405016168.10986

 

best,

 

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


In Topic: Factors In Determining A Successful Pottery Business

Today, 09:58 AM

Between Chris and Mea there........ its about covered.

 

best,

 

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


In Topic: Refiring Question

Today, 09:43 AM

Plates are flat objects sitting on THICK thermal masses called kiln shelves. When the kiln is heated up, the exposed thin plate rims will heat pretty quickly and evenly. But because of the thermal mass of the plate bottom and the kiln shelf, the poor circulation with kiln atmosphere on the back side of the plate, and the fact that radiant heat transfer (particularly if this is an electric kiln) is not typically hitting even the plates top surface well......... it can cause the plates (and low wide bowls) to crack.  Rim expands... bottom does not at the same time.

 

Almost the same effect happens in reverse if ther kiln is cooled too quickly due to the cooling retarding of the thermal mass of the plate bottom on the kiln shelf.  Rim contractss... bottom does not at the same time.

 

best,

 

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


In Topic: Sick Clay

Yesterday, 07:03 PM

.........."have the nice young men in their clean white shirts come and take her away."

 

Ah... somone who remembers that song.....ha ha hee hee and they're comint to take me away ho ho.

 

best,

 

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

 

PS:  M.D. AND a potter ......... duly impressed here. :)


In Topic: Sick Clay

Yesterday, 09:56 AM

... also, if you do haul in dirt samples to your over worked GP, you might be sent for a different kind of testing.

 

 

:D  :D :D