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oldlady

Mixing This Glaze As A Present For A Friend

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the amount of red iron oxide is 19.87.   this is a rich, cordovan red-brown and i know my friend will love it.  

 

do i remember some "rule" that limits colorants to less than 15% or am i having a senior moment and worrying about nothing?

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Don't we love to peak into other people's kilns.

Beautiful unique platters Old Lady!

Ignorant of the iron limit, some people have a condition whereby their body overloads with iron.....is the limit to my knowledge. Did you fire down for this bright colour? Just wondering if you'd get similar reds with less iron but firing down instead?

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Well, isn't opening the kiln the most exciting, terrifying and rewarding experience we have as potters? Many of us are besides ourselves those last few hours or degrees (F or C, it doesn't matter) of waiting until we pop the lid. It is just as much fun to peak into other people's kilns as our own.

 

Those platters are beautiful. Thanks for sharing.

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Oldlady - WOW that is one beautiful load of glazed pieces! I want to touch and stroke them. I really like that iron red color as well. Did you make it using that base recipe and just adding RIO? I am feeling covetous.

 

T

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if anyone wants the recipe, i will put it up here.  thanks for the comments, this is not the best picture of the glaze but the one that wanted to be posted.  ( tried the other one 5 times and gave up.)

 

no slow cooling in a mixed load.  i did once and it was nice but i am not a fan of brown.  this second shot is of the pot i wanted to show you, just not the picture that really shows off the red.

 

found it!   filed under "test" of all things!  see it in the first post, it really is red!           (brown)

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Read up on Iron Oxide in Hamer's book Interesting, no real limit of iron oxide, depends on form of iron, alkalinity/acidity of the glaze, temp of firing, reaction of clay body effect wanted etc, but is an interesting read......Sometimes a flux sometimes an anti flux......Addition can be in the high 20s. Sidetracked into reading this this am because of you Old Lady, apricots to preserve, garden to water, waiting for another kiln load to cool.......

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We drink more iron every day from our water than would probably ever leach out of that plate.  :)

 

John Britt has a really nice quick PDF for like $1.99 where he talks about leaching of Iron and Copper and how we are super exposed to them from all the pipes running water all across the world. It's a great read and really worth the two bucks.

 

http://johnbrittpottery.com/shop/844/

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