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Comment by Cyndy Littleton on May 12, 2015 at 7:02pm

I just posted a pic of frogskin over candy apple on porcelain. It's kind of interesting.

Comment by Jeff Poulter on May 12, 2015 at 2:38pm

Hi Trish,

     Yours came out pretty close, sorry you don't like it.  It could have gone a hair higher for the melt and a slow cool definitely gives more crystals but you can tell it's Frogskin.  jhp

Comment by Norm Stuart on May 12, 2015 at 10:23am

Not all frogs are the same.

Frogskin seems to look completely different on each different type of clay.

Ceramics really does require controlling a huge number of factors.

Comment by Trish Eckman on May 12, 2015 at 7:52am

This is frogskin on Laguna B mix.  Same recipe as below.  Yuck!

Comment by Norm Stuart on May 11, 2015 at 7:07pm

These are all the same batch of Frogskin, fired with the identical Cone 6 program with digital controller.

Different clays and different application thickness.

Comment by juli long on May 11, 2015 at 3:40pm

Jeff,

Since I just made only 200 grams, I did not sieve... Usually I sieve glazes that have a lot of one colorant, or one that has not been used for a while. Well, maybe, I sieve most large batches, not smaller test batches. 100-500 gram.

Comment by Jeff Poulter on May 11, 2015 at 3:19pm

I can't imagine those subs having that dramatic of an effect on the recipe.  Are you sieving the glaze?  I'm a firm believer in the non-sieving as I think you can sieve a lot of character right out of the glaze.  I have noticed when I spray this particular glaze that there is a little clumping going on, but nothing that won't go through the sprayer at 60 psi.  jhp

Comment by juli long on May 11, 2015 at 3:12pm

Jeff,

I subbed the Custer with G200hp, and Gerstley Borate with Gilespie Borate, and upped the silica by +1.

I tested it over white universal slip, and you can see a tad bit more green, that on the test tile with just buff clay.

Comment by Jeff Poulter on May 11, 2015 at 3:04pm

Just checking to make sure this is the recipe that you are using:

Custer Feldspar 22

Gerstley Borate 22

Neph Syen 22

Silica 26

Wollastonite  3

EPK  3

Titanium Diox  2

 

Red Iron Oxide  3

Copper Carb  4

Bentonite  2

This is the one I use that Kathy posted here on this site.  jhp

Comment by juli long on May 11, 2015 at 3:00pm

Jeff, yes on a buff clay.  It has a little more green than the photo shows.  Maybe I will make up another batch and test it. This batch was only 200 grams, and I used 3 test tiles.

j

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