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docweathers

Member Since 30 Jul 2011
Offline Last Active Mar 01 2015 02:27 PM
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Topics I've Started

Stephen Hill's Watercolor Green Pitting

15 February 2015 - 02:13 PM

From time to time I'm having problems with Stephen Hill's watercolor green pitting. It's not as bad when I put it over SCM.  Sometimes it's just fine. In all cases, I'm using G mix 6 w/ grog Fired to cone 6. All the results are from the same small batch of glaze.

 

This is the formula that I'm using

 

Water Color Green (Cone 6)

 

 

Custer ...         47.8 

Silica ...          16.9

Lithium Carb ... 4.0

Frit 3124 ...      5.0

Whiting ...       16.0

Strontium Carb ... 7.5

Bentonite ...      2.9

Copper Carb ... 8.0

 

 

 

As a side note, on one pot the pitting actually looked pretty cool since it was very evenly distributed and the color was darker around each pit. Not what I would have planned but an interesting result.


Coating For Bottom Of Pots

15 February 2015 - 11:58 AM

Even though after I grind the bottom of my pots they feel very smooth, it makes me nervous to put them on fine furniture for fear of causing scratches if they are moved. I sometimes put those little stick on felt dots on the the bottoms, but I would rather have some kind of a coating I can paint on that will make sure there's no abrasiveness. 

 

I've never had a problem with causing scratches and I'd like to keep it that way.


Kiln Wash Flaking Off Of Shelves

09 February 2015 - 10:47 PM

I was having trouble with kiln wash flaking off of my shelves. To try to solve this I wash my shelves thoroughly to got all of the old kiln wash off. When they were dry, I brushed on three layers of Laguna's premium kiln wash, painting each layer in the  crosswise direction of the previous layer. After they dried thoroughly I did a cone 6 glaze firing. Now my kiln wash is flaking off even worse. 

 

 what am I doing wrong?


Wrights Water Blue Crazing On G Mix 6

09 February 2015 - 09:58 PM

I really like the color that Wrights water blue gives but I'm consistently getting crazing. I've read that this is fairly common with this glaze.

 

wrights water Blue glaze   (Cone 1–6., oxidation)

 

Lithium Carbonate . . . . . . . . . . . . . . . 3 %

Strontium Carbonate . . . . . . . . . . . . . 9

Ferro Frit 3110 . . . . . . . . . . . . . . . . . . 59

EPK Kaolin . . . . . . . . . . . . . . . . . . . . . 12

Silica . . . . . . . . . . . . . . . . . . . . . . . .    17

                                                          100 %

 

Add: Bentonite . . . . . . . . . . . . . . . . . . . 2 % Copper Carbonate . . . . . . . . . . . . 5 %

 

Has anyone worked out a modification that prevents the crazing... a better fit to G mix 6


Mocha Diffusion Tobacco Tea

31 January 2015 - 09:45 PM

I'm experimenting with a number of ways to try to get better mocha diffusion. I just boiled up some nasty tobacco tea. I understand that it's best to let it all stand for a week. During that time a bacterial scum is supposed to form on the surface. My question is, does this bacteria chemically add something useful to the tobacco tea or is it just a random annoyance. I ask because putting a wine bubbler on the container with this nasty goop would likely inhibit the scum from forming.