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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   38 downloads Attached File  Red Jars.jpg   30.85KB   36 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


#9 Mary T

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Posted 28 April 2015 - 12:39 PM

okay.. it has been so long since I have been here complaining about ketchup red not being red that I am not sure that this post will go out there somewhere BUT I need to tell someone that I just emptied my kiln with a whole load of ketchup red with glossy black over and black with ketchup red over. In my 20 years, I have never been so pleased with a glaze. Comes out almost black but with variation on raised areas. It doesn't leave my fnger prints, drips, messes, etc., just a beautiful shiney glaze. I just microwaved a piece and it didn't explode...  sometimes life is just good!



#10 Min

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Posted 28 April 2015 - 03:58 PM

Have any pictures Mary T? Would be great to see!  :)



#11 Chantay

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Posted 28 April 2015 - 09:22 PM

Would you share the recipe? Would love to see pictures. And pat yourself on the back, you deserve it for tenacity and endurance.
- chantay

#12 bciskepottery

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Posted 28 April 2015 - 09:30 PM

In addition to recipe, do you use a special firing/cooling schedule for your kiln?  That would be helpful, too, as iron reds do better with a controlled cooling and a hold at 1600F or so to promote crystal growth. 

 

I've taken a cone 10 iron red (kaki) that came out brown and ran it through a bisque kiln firing . . . with good red results from the third firing. 



#13 Marcia Selsor

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Posted 29 April 2015 - 08:57 AM

here is one I used with crimson stain and one with iron. Both recipes are listed.

 

 

http://community.cer...6-deep-crimson/

 

http://community.cer...ge-6-oxidation/

 

Marcia


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Professor Emerita Montana State University-Billings
 


#14 rayaldridge

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Posted 29 April 2015 - 02:18 PM

I've been working with a version of Bailey's Red, modified for Cone 8, but not much ketchup color yet.  I may be putting it on too thick.  On the other hand, it makes a very useful overspray for some of the other glazes I'm working with.



#15 oldlady

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Posted 30 April 2015 - 11:37 PM

thank you marcia for the recipe for faux celedon on Frost.   i can't wait to try something with frost!!!  i had heard that glazing it was problematic.  thanks again :)


"putting you down does not raise me up."

#16 hafemaa

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Posted Yesterday, 08:38 AM

Hi Mary T,

 

I thought I would write, since I have tried mixing, glazing, and testing that same Ketchup Red Glaze you are talking about from that same book! 

 

I did two test batches of that Ketchup Red and both batches came out brown, just like yours did. For the first test, I used just regular red iron oxide because I didn't have the spanish oxide that the recipe called for. I mixed 3 batches, one with 3% of the oxide, one with 5%, and the other with 7 or 8%. They came out pink and light pink in color. So I purchased the Spanish Oxide and tried again. This second test I mixed two batches, one with 10% of the spanish oxide and the second with 15%. Both also came out brown, but had more red in them.

 

I fired to Cone 5 with a 30 minute hold in an electric. My next test will be firing to Cone 6 and firing down slowly - as I have read that, too, to fire down slower.

 

Did you get the glaze to fire to red? What did you do differently?

 

Thanks,

Amy



#17 neilestrick

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Posted Yesterday, 09:46 AM

I have found that iron reds at cone 6 are greatly affected by the clay body. I have a wonderful iron red that works great on clay bodies that are lower in silica, such as stoneware clays. Specifically, in my studio we have great results on standard 630 and 112. On porcelain and white stoneware bodies the color is not nearly as good. So it may not be the fault of the glaze or the firing if you're not getting good red.


Neil Estrick
Kiln Repair Tech
L&L Kilns Distributor
Owner, Neil Estrick Gallery, LLC
www.neilestrickgallery.com

neil@neilestrickgallery.com


#18 oldlady

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Posted Yesterday, 12:58 PM

i think the name is a problem.  picturing ketchup makes me think of the fresh-out-of-the-bottle red.  what really comes out is dried up from yesterday's picnic redbrown.


"putting you down does not raise me up."




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