Current Testing

Current Testing

Created
Mar 22, 2023 03:51 PM
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My next round of testing intends to lock down a range of crater glazes of different colors using stains and oxides for soon application testing, as well as expanding my range of glazes to include Strontium Satin Matte Glazes, and special effect glazes such as crackles, crawls, metallics, and gloops. I’ll also be testing 2nd firing some less desirable pots with a red iron oxide wash over top. (This has been tested and is pending documentation)

CO-84
Kuan Snowflake Crackle
Cone 6-8
Nepheline Syenite
80
Whiting
5
Borax frit [used Frit 3134]
15
Bentonite
2
Apply very thickly.
Notes:
mixed at 50g water to 100g dry
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  • Left is 8/8/8 dip, right is 12/12/12/12/12/12 over all

CO-85
Transparent Crackle
Cone 5-8
Nepheline Syenite
26
Whiting
12
Lithium Carbonate
10
Barium Carbonate
3
Calcium Borate Frit [used Gerstley Borate]
5
Silica
44
Bentonite
2
Apply very thickly.
Notes:
60g water to 100g dry, possibly a bit thin
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CO-86
Runny Glaze
Cone 6-8
Soda Feldspar
45
Silica
17
Calcium Borate Frit [used Gerstley Borate]
15
Whiting
14
EPK
5
Tix Oxide
5
Bentonite
2
Apply thickly.
Notes:
mixed at 70g water to 100g dry
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CO-87
Bloomfield Lichen
Cone 8
Nepheline Syenite
50
Light Magnesium Carbonate
40
Standard Borax Frit
10
Bentonite
2
Notes:
300g water to 100g dry
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CO-88
Katz Crawl
Cone 8-10
Nepheline Syenite
39
Zinc Oxide
19
Silica
11
EPK
32
Notes:
120g water to 100g dry, zinc didn’t dissolve well
added 2 bentonite
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CO-89
Lalone Crawl
Cone 6 Oxidation
Nepheline Syenite
70%
Ball Clay
5%
Magnesium Carbonate
25%
Bentonite
2%
Notes:
200g water to 100g dry
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CO-90
Lichen
Cone 6 Oxidation
F-4 Feldspar [used generic Soda Feldspar]
30%
Kaolin
19%
Magnesium Carbonate
31%
Talc
8%
Frit 3134
6%
Zinc Oxide
6%
Notes:
added 2 bentonite
250g water to 100g dry, zinc didn’t dissolve well
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CO-91
Pewter Glaze (Murfitt)
Cone 6-8
Manganese Dioxide
77
EPK
23
Bentonite
2
Test w/ thin and thick applications.
Notes:
mixed at 100g water to 100g dry
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  • Tested at 3/3/3 and 8/8/8

CO-92
Bronze Glaze (Murfitt)
Cone 6-8
Manganese Dioxide
61
EPK
23
Copper Oxide
8
Cobalt Oxide
8
Bentonite
2
Test w/ thin and thick applications.
Notes:
mixed at 100g water to 100g dry
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  • Tested at 3/3/3 and 8/8/8

CO-93
Strontium Matte Tests
  • Base CO-93-1
    • notion image
  • +2 Silica, -2% Strontium Carb CO-93-2
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    • Tested with 3/3/3 dip and 6/6/6 dip
  • +5% Silica, -5% Strontium Carb CO-93-3
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    • Tested with 3/3/3 dip and 6/6/6 dip
  • Without Titanium Test:
    • 0.5% Cobalt Carb CO-93-4
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    • 1% Copper Carb CO-93-5
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    • 1% Chrome CO-93-6
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    • 6% Black Stain CO-93-7
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    • 15% Zirconium Stain CO-93-8
      • notion image
    • 15% Lobster Red Stain CO-93-9
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    • 6% Rutile, 1% Copper CO-93-10
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    • 5% Titanium CO-93-10
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    • 5% Rutile CO-93-11
      • notion image

Crater Glaze Colorant Testing
Red and Yellow Stains
  • Test 8% Zirconium Stain, no Titanium Dioxide CO-94-1 “Yellow Crater”
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  • Test 15% Zirconium Stain, no Titanium Dioxide CO-94-2 “Yellow Crater”
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  • Test 8% Lobster Red Stain, no Titanium Dioxide CO-95-1 “Red Crater”
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  • Test 15% Lobster Red Stain, no Titanium Dioxide CO-95-2 “Red Crater”
    • notion image
  • Retest Metallic Crater 2 CO-82-1 “Metallic Crater II”
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  • Retest Cobalt Crater (0.5%), at 0% and 5% Titanium Dioxide CO-76-10:11 “Cobalt Crater”
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    • no Titanium Dioxide
    • notion image
    • w/ 5% Titanium Dioxide
  • Retest Copper Crater (1%), at 0% and 5% Titanium Dioxide CO-75-10:11 “Copper Crater”
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  • No Titanium Dioxide
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  • 5% Titanium Dioxide
  • Retest Chrome Crater (1%), at 0% and 5% Titanium Dioxide CO-77-13:14 “Green Crater” (60g water to 100g dry ON ALL)
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  • No Titanium Dioxide
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  • 5% Titanium Dioxide
  • Base no TiO2 - CO-72-1 “Strontium Crater”
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  • Retest White Crater (5% Titanium) - CO-73-1 “White Crater”
    • notion image
  • Restest Rutile Crater (5% Rutile) - CO-78-1 “Rutile Crater
    • notion image
  • Test 8% Best Black Stain, no Titanium Dioxide CO-95-2 “Black Crater”
    • notion image
  • Test 14% RIO, no TiO2 CO-74-16
    • notion image

RIO Application Stain
CO-96
Red Iron Oxide
50
Gerstley Borate
50
70g water to 100g dry

Gloops
Rough Gloop
CO-97
EPK
33.4
Silica
32.4
Frit 3124
30.8
Whiting
3.4
Bentonite
2
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Glossy Gloop
CO-98
Silica
32.8
EPK
27.3
Frit 3134
18.6
Minspar 200 [substituted for a general soda feldspar]
13.5
Whiting
7.7
Bentonite
2
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  • Add 40% [Added 60% instead] water by weight, blend, then dry on plaster into paste for both
 
No stains for now
 

 
CO-62-1
Easy E Clear
Cone 6 Oxidation
Nepheline Syenite
20%
Silica
25%
Wollastonite
20%
Kaolin
15%
Frit 3124
20%
Bentonite
2%
The best cone 6 clear that I’ve tested. Seems to be fine, thick or thin. No crazing, no dripping, no pin holing, and no dripping.
Mixed at 70g water to 100g dry
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Testing 4/4:
  • Gloop colorants
  • Thick thick crackle application
  • Retest bronze multiple areas of kiln
  • Application test crater glazes
 

 
Glossy Gloop Colorant Tests
 
  • CO-98-1 (retest white for control)
    • notion image
  • CO-98-2 (5% Mason 6600 “Best Black”)
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  • CO-98-3 (5% Mason 6026 “Lobster Red”)
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  • CO-98-4 (5% Mason 6450 “Praseodymium”)
    • notion image
  • CO-98-5 (5% Mason 6313 “Medium Blue”)
    • notion image
  • CO-98-6 (5% Mason 6263 “Victoria”)
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  • CO-98-7 (5% Mason 6023 “Clover Pink)
    • notion image
  • CO-98-8 Purple 8% - have in small bag, test next time
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  • CO-98-9 (5% Mason 6129 “Gold Ambrosia”)
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For next round of testing:
  • Colored slips
  • Colored Crawls [DONE]
  • CMW Pick-A-Part
 
  • Test known crater colorant combinations with other base recipes
 

 
CO-99-1
Colored Slip
Cone 5 Oxidation
  • Using Highwater Helios as base
  • Currently drying out
  • Base
  • +8% Mason 6313 “Medium Blue”
  • +8% Mason 6450 “Praseodymium”
  • +8% 5% Mason 6026 “Lobster Red”
 

 
Yehrim’s Cone 06 Gloop
CO-100-1
Cone 06
Whiting
17.9
Ferro Frit 3124
25.8
Nepheline Syenite
14.8
EPK
12.2
Silica
29.3
 
  • Tested as a paste at 40% applied with brush and spatula, and as a solid after drying out, but had to re-add some of the paste because it was too dry after being put on plaster pretty much immediately
  • Tested at 40% water to dry
 

Lalone Crawl
CO-89 Stain Tests
Test with 50g dry samples to 100g water
  • CO-89-1 Base
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  • CO-89-2 (5% Mason 6600 “Best Black”)
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  • CO-89-3 (8% Mason 6026 “Lobster Red”)
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  • CO-89-4 (8% Mason 6450 “Praseodymium”)
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  • CO-89-5 (3% Mason 6313 “Medium Blue”)
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  • CO-89-6 (8% Mason 6263 “Victoria”)
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  • CO-89-7 (10% Mason 6023 “Clover Pink)
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  • CO-89-8 (8% Mason 6385 Pansy Purple)
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Retesting some Gloops
  • CO-98-3 (dripped in)
  • CO-98-9 (dripped in)
  • CO-98-2 (dripped in)
  • CO-98-6 (dripped in)
  • CO-98-8 (Purple Stain)
 

CMW Pick-A-Part
  • H-1-1
 

 
CO-101
 
-1: White (Base)
/image
 

Underglaze tests
 
CO-102
 
-1: 33%
-2 16.5%
-3 8.25%
 
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