Glazes - Master Page

If You Use G200 Feldspar -- The Formula is Changing 1/1/2010

G200Changes.pdf You will have to change all your recipes when existing stocks run out. Currently a potash spar is mixed 70:30 with a soda spar. The new formulation will just contain the potash spar. Read the linked pdf from Standard Ceramic Supply.

Fast Five Glaze testing. This is a super quick way to test a one-ingredient modification to a glaze you are already using. It is quite effective.

Glaze Recipes - Resources and Member Favorites This is a good place to post your recipes and results.

The Sankey Glaze Database reproduced right here for your convenience! The work of John Sankey and Alisa Clausen together make it the best online source of glaze recipes.

Getting into Glaze makeup. What is a Glaze? What is Clay?

An introduction to ceramic materials and how they combine in different proportions to form either glazes or clay bodies.

Glaze Calculation, Glaze Chemistry, Glaze Software - Articles wanted!

Charts of materials composition to aid glaze formulation and modifications.
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Comment by Meredith Walker on August 13, 2018 at 12:21pm

I've searched but haven't yet found a definitive answer to this question: Is there a food-safe turquoise glaze? I know that Opulence sells a food-safe one (both dry and liquid), but I'd like a recipe for one. Thanks for any help.

Comment by Barbara Hanselman on April 16, 2014 at 2:24pm

I have been having an issue with an older glaze when I brush or pour it on my bisque ware. Pete's Weathered Blue is the glaze in question - as it drys, it cracks and easily pops off the clay surface.  Any idea why?


This is a true weathered looking glaze from Pete Pinnell.
Nepheline Syenite 40.0%
Dolomite  2.0%
Bone Ash 6.0%
Lithium Carbonate 4.0%
Zinc Oxide 4.0%
Copper Carbonate 2.0%
Cobalt Carbonate 0.25%
Bentonite 2.0%

Comment by Marko Madrazo on June 19, 2013 at 3:10pm

I Just learned about, Ravenscrag Slip, from a post here. I Google it to their website. I love the cone 6 glazes. I have to try these. I am new to making glazes, but I need to cut cost and create a pop for my pottery. Thanks for sharing. 

Comment by Ann E. Vreeland on May 23, 2013 at 7:42pm

I'm excited to be a new member of Cone 6 Electric.  Learning how to navigate the website and wonder where the recipes for the glazes in the Sankey Glaze Database are?  All I get are comments regarding each glaze, no recipe, no picture.  HELP!

Comment by George Lewter on March 28, 2013 at 7:57am

I just ordered some of the more expensive colorants and materials from If you mix glazes, might want to check these prices.

1 lb cobalt oxide - 35.00
3 lbs copper carbonate (@7) - 21.00
3 lbs lithium carbonate (@9)- 27.00
1 lb tin oxide - 22
2 lb calcined zinc oxide (@5.50) 11.00
3 lb yellow ocher (@2.50) - 7.50
Total - $123.50 not including shipping. This order shipped for $13 

Comment by Lina Seidman on December 1, 2012 at 11:47am

Looking for unusual glazes from Ravenscrag Slip

Comment by Sandy McGhee on September 22, 2012 at 8:58am
Looking for a lost recipe for Benita's White. Anybody heard of it. Did a search with no luck. Thanks!
Comment by Ceci on August 9, 2012 at 4:38pm

Hi Louden

I took a Steven Hill day workshop in March and had his handout for glaze recipe

SH Copper Ash

Dolomite        2.8

Whiting        32.5

EPK              24.7

Flint               6.0

Alberta Slip   19.1

Frit 3124       14.9



Bentonite              2.0

Copper Carbonate  5.6

Comment by H. Louden Kiracofe on August 9, 2012 at 7:45am
I'm looking for the recipe for S.H.Copper ash. Cananyoneprovide this? Thanks, Louden
Comment by O'Brien Tyrrell on April 21, 2012 at 5:24pm

I am currently mixing up some of Steven Hill's glazes.  I have run out of EPK and am wondering if I might be able to substitute #6 Tile clay.  Some years back my clay supplier suggested making the change and that it would not make a difference. I checked the Clayart archives and both Ron Roy and Vince Pitelka left replies to someone that they are virtually the same.

I do not want to mix up the 13 glazes w/ #6 Tile clay and have problems...would rather wait until Monday and make a road trip to buy the EPK.

Thank you.



Comment by George Lewter on December 9, 2011 at 10:56am

Ann, the clear gloss has no toxic properties as a base glaze, and is durable enough that it should not release harmful amounts of the metal oxide colorants that you might add in normal percentages.  The only way to know beyond a shadow of a doubt, is to submit small cups to a testing lab for leach testing. This subject is covered in a number of places on our network. To learn more type "food safe" into the search box at the upper right corner of all of our pages. 

Comment by Jan Wallace on December 9, 2011 at 1:38am

Just reading this discussion. Ann, George recommended this clear glaze to me and i find it to be wonderful. A 'no fail' clear glaze. I have brushed it on, dipped it, sprayed it. Added oxides to it. I love it. I have also used it for 'Single Firing' and it works brilliantly!

Comment by George Lewter on December 7, 2011 at 8:00pm

Ann Griffin,

Regarding your recipe conversion from low fire to cone 6.  Too many things change over a 400 degree temperature differential between cone 06 and cone 6.  It's hard enough to try to adjust a cone 10 recipe 100 degrees down to cone 6.  The task you propose is really not feasible. I'm going to guess that you are looking for a gloss. I suggest you try this CLEAR GLOSS with the same additions you had in your glaze.

Comment by Tracy Minarik on December 7, 2011 at 3:39pm

Looking for a couple of recipes if you may be so inclined to share..
I need a med. to dk. pink glaze recipe for spraying and a nice
Celedon.  Celedon can be shiny or matte.. 
Thanks in advance.. ~

Comment by Ceci on July 12, 2011 at 9:10am
HELP. I mixed a glaze recipe checking the tare weight for each ingredient. The tare weight changed each time I emptied out the container and I had to make the adjustment. The glaze I made which normally is consistent did not turn out as expected. This morning I moved the triple beam scale to another table and doubled checked the weight. It seems that being on a different table is stabilizing the scale. Can that be? Doesn't make sense. Any suggestions?
Comment by Kathy Ransom on April 21, 2010 at 8:20am
Leather Cone 6 Ox

Soda Feldspar 42
Whiting 8
Kaolin 17
Zinc Oxide 17
Talc 12
Lithium Carbonate 2
Bentonite 3

Red Iron Oxide 10

This was an attempt to take the basic recipe for Chameleon Grey/Green and get the same cool effect with other colors. The Red Iron Oxide is very high but I got something I wasn't expecting at all, wiser minds likely would have known exactly what would happen! I do kind of like this glaze and could see some application with sculptural pieces as it wouldn't be at all food safe. I dipped my test tile and found the 2nd dip made it far too thick and as you can see on the end of the tile it's not as attractive.

Comment by Kathy Ransom on April 21, 2010 at 8:11am
Chameleon Grey/Green (Sorry I don't remember the source)

Soda Feldspar 42
Whiting 8
Kaolin 17
Zinc Oxide 17
Talc 12
Lithium Carbonate 2
Bentonite 3

Copper Carbonate 3

Beautiful lime green buttery satin with grey areas on M340. I sprayed this glaze, haven't tried brushing or dipping but believe a thinner coat is better


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