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Ketchup Red Glaze


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#1 Mary T

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Posted 17 November 2012 - 02:34 PM

I used the ketchup red glaze from "Techniques &tips for Electric Kilns" and it came out brown. Is there a red glaze out there that really comes out red at cone 6? BUT the Glossy Black over the Blue Matt is beautiful. Thank you for that!

#2 Mary T

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Posted 18 November 2012 - 10:35 AM

http://web.ncf.ca/bf250/glazeiron.html

a nice collection of information for understanding what makes or breaks iron glazes



#3 Mary T

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Posted 18 November 2012 - 10:36 AM


http://web.ncf.ca/bf250/glazeiron.html

a nice collection of information for understanding what makes or breaks iron glazes



#4 Mary T

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Posted 18 November 2012 - 10:36 AM

Very interesting, thank you.

#5 bciskepottery

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Posted 18 November 2012 - 12:39 PM

Here is a link to some good info on iron reds by John Post . . .

http://www.johnpost....troubleshooting

#6 Bill T.

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Posted 18 November 2012 - 04:09 PM

The John Post article is right on. I have mixed several iron red over the past year and find slow cool is the big secret. Coyote's Really Red is a good cone 6 glaze, just put it on thick and no need to slow cool. Suspect it is an encapsulated glaze.

Pic of Randy's red I mixed, cup and saucer, and Coyote Really Red bottles.Attached File  Randy\'s Red.jpg   26.31KB   35 downloads Attached File  Red Jars.jpg   30.85KB   33 downloads

#7 perkolator

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Posted 19 November 2012 - 06:36 PM

Depends on what type of red you're trying to get.

Encapsulated mason stains will definitely get you bright red -- like those posted above -- but they always look "Crayola" to me. Add up to 10% or so and it's pretty hard to screw up since they're made to do what they say. Underglazes also will work in a pinch - Duncan "Really Red" underglaze is a good liquid form of red to add into your glaze or just use it over/under another.

Also, I've tested many commercial ^06/04 glazes (Like Duncan, Speedball, etc) at ^6 and many of them work just fine without any running (but always test first!!!!) since they're made so dependable and user friendly.

If you're looking for a reduction copper red at ^6, then that's different.

^6 Red to Green (reduction)
25 #3124
15 Gerstley
20 Neph Sye
15 EPK
15 Flint
5 Whiting
5 Zinc
1% Ba
1% Cu

Iron Red
^6 Berry Rust
26 Silica
27 EPK
7 Neph Sye
9 Bone Ash
13 Talc
18 #3134
12% RIOX

If anyone has other ^6 reds (esp. Cu reds) - mind sharing?

#8 koreyej

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Posted 20 November 2012 - 11:02 AM

For premade, Coyote also offers 2 copper reds; Oxblood and Snowy Plum. They are really cool, but need to be applied thickly to get the red. I think there is also a recipe in the archives for a chrome-tin pink that looked like it would be fun to try.

http://coyoteclay.com/

Four ways to red

Korey Averill
ka Studios Pottery

www.kastudios.com





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