Cone 6 Oatmeal Glaze Recipes

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Ravenscrag Cone 6 Oatmeal

Code #

GR6-H

Materials Amt
Ravenscrag Slip 60.000
Calcined Alumina 10.000
Dolomite 10.000
Ferro Frit 3134 20.000
Additions
Manganese Dioxide 4.000
Rutile 5.000
Illmenite Granular 0.300

Total:109.30

Auto Unity Formula

CaO 0.56
MgO 0.19
K2O 0.05
Na2O 0.09
(KNaO) 0.14
TiO2 0.14
B2O3 0.16
Al2O3 0.42
SiO2 1.85
Fe2O3 0.01
MnO2 0.11

Ratios

Si:Al: 4.4:1
SiB:Al: 4.7:1
R2O:RO: 0.2:0.8

Expansion

7.5 (Molar:7.3)

LOI

10.0

Cost

0.03 per kg

Notes

*Do not apply too thick, best thin to medium thickness.

If it cracks on drying consider using a mix of 1000F roasted and raw Ravenscrag Slip (e.g. 40 raw, 20 roast), or add a little CMC gum.

Originally G2851D Kats Matte #t variation.

Pictures

GR6-H varying thickness at cone 6

Ravenscrag Cone 6 Oatmeal plate

Ravenscrag Oatmeal at cone 5R

Typecodes

ST-Untitled typecode

Alternate Code Number:MRG6H

XML (to paste into Insight)

<?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="Ravenscrag Cone 6 Oatmeal" id="64160" key="YQzEPdej" date="2022-12-19" typecodes="ST" codenum="GR6-H" picturebasename=""> <recipelines> <recipeline material="Ravenscrag Slip" amount="60.000" tolerance=""/> <recipeline material="Calcined Alumina" amount="10.000" tolerance=""/> <recipeline material="Dolomite" amount="10.000" tolerance=""/> <recipeline material="Ferro Frit 3134" amount="20.000" tolerance=""/> <recipeline material="Manganese Dioxide" amount="4.000" added="true"/> <recipeline material="Rutile" amount="5.000" added="true"/> <recipeline material="Illmenite Granular" amount="0.300" added="true"/> </recipelines> </recipe> </recipes>

Born: 2004-11-02, Modified: 2022-12-19 20:18:58

Alberta Slip Cone 6 Oatmeal

Code #

GA6-F

Materials Amt
Alberta Slip 40.000
Ferro Frit 3134 20.000
Alberta Slip 1000F Roasted 40.000
Additions
Rutile 5.000
Titanium Dioxide 3.000

Total:108.00

Auto Unity Formula

CaO 0.48
MgO 0.24
K2O 0.09
Na2O 0.19
(KNaO) 0.28
TiO2 0.29
B2O3 0.20
Al2O3 0.39
SiO2 2.70
Fe2O3 0.08

Ratios

Si:Al: 7.0:1
SiB:Al: 7.5:1
R2O:RO: 0.3:0.7

Expansion

8.2 (Molar:7.7)

LOI

4.9

Notes

*5% rutile is the practical limit, it mattes drastically after that. Perhaps better with 4%. If pitting occurs try reducing the titanium to 2.

Pictures

Alta Slip Oatmeal at cone 6 without slow cool

GA6F Alta Slip Oatmeal

5 rutile and 3 titanium.

GA6F Alta Slip Oatmeal at cone 5R

Alta at 5R.

GA6-F brushing version

No roasted Alberta Slip was needed since it contains CMC gum.
675 powder, 100 Laguna gum solution, 380 water. Next time use more water and add enough Veegum to gel it as needed.

Alternate Code Number:MA6F

XML (to paste into Insight)

<?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="Alberta Slip Cone 6 Oatmeal" id="70045" key="Wf7u5YZ8" date="2022-12-19" codenum="GA6-F" picturebasename=""> <recipelines> <recipeline material="Alberta Slip" amount="40.000" tolerance=""/> <recipeline material="Ferro Frit 3134" amount="20.000" tolerance=""/> <recipeline material="Alberta Slip 1000F Roasted" amount="40.000" tolerance=""/> <recipeline material="Rutile" amount="5.000" added="true"/> <recipeline material="Titanium Dioxide" amount="3.000" added="true"/> </recipelines> </recipe> </recipes>

Born: 2010-06-09, Modified: 2022-12-19 20:30:29

G2934:G2926B Oatmeal - Cone 6

Code #

G3933

Materials Amt
G2934 Matte Glaze (G2934) 75.000
G2926B Glossy Glaze (G2926B) 25.000
Additions
Red Iron Oxide 1.000
Tin Oxide 5.000
Rutile 1.200

Total:107.20

Auto Unity Formula

CaO 0.53
MgO 0.34
K2O 0.01
Na2O 0.11
(KNaO) 0.12
TiO2 0.05
B2O3 0.12
Al2O3 0.48
SiO2 3.27
Fe2O3 0.03
SnO2 0.12

Ratios

Si:Al: 6.8:1
SiB:Al: 7.1:1
R2O:RO: 0.1:0.9

Expansion

5.9 (Molar:5.9)

LOI

11.3

Cost

9.47 per kg

Notes

*This came from a someone who was targeting the "fake Shino" effect in the Mid-Range Glazes book by John Britt. He transplanted the mechanism (the iron, rutile and tin oxide) into our G2934 matte base (with help from the G2926B glossy). While the effect fails as a shino it does produce a nice oatmeal (a standard among middle-temperature potters).

We have mixed it as both a dipping and brushing glaze and used it for a couple of years. It works especially well on dark bodies. However it does have issues with crawling, many pieces have to be touched up and retired (refining does work well).

The richest color and best surface is achieved with a slow cool firing.

Pictures

G3933 original photo from customer

The original photo, from the customer, of the glaze shivering on a black-burning body provided the motivation to try it. We were not able to duplicate the shivering, it fits all the bodies we have tried so far.

G3933 on Coffee clay, M340, M340GS

No sign of shivering out of the kiln or after iceboater:boiling water test. Our results look quite different. Using the C6DHSC firing schedule.

G3933 Oatmeal on M390 at Cone 5 slow cool

Using the C5DHSC firing schedule.

XML (to paste into Insight)

<?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="G2934:G2926B Oatmeal - Cone 6" id="208086" key="zHdGDHbB" date="2023-09-18" codenum="G3933"> <recipelines> <recipeline material="G2934 Matte Glaze" lookup="G2934" amount="75.000" tolerance=""/> <recipeline material="G2926B Glossy Glaze" lookup="G2926B" amount="25.000" tolerance=""/> <recipeline material="Red Iron Oxide" amount="1.000" added="true"/> <recipeline material="Tin Oxide" amount="5.000" added="true"/> <recipeline material="Rutile" amount="1.200" added="true"/> </recipelines> </recipe> </recipes>

Born: 2021-10-27, Modified: 2023-09-18 04:15:45

G2934:G2926B Oatmeal Cone 6 #2

Code #

G3933A

Materials Amt
G2934 Matte Glaze (G2934) 80.000
G2926B Glossy Glaze (G2926B) 20.000
Additions
Red Iron Oxide 1.500
Tin Oxide 5.000
Rutile 1.500

Total:108.00

Auto Unity Formula

CaO 0.53
MgO 0.35
K2O 0.01
Na2O 0.10
(KNaO) 0.11
TiO2 0.06
B2O3 0.10
Al2O3 0.47
SiO2 3.15
Fe2O3 0.04
SnO2 0.11

Ratios

Si:Al: 6.6:1
SiB:Al: 6.9:1
R2O:RO: 0.1:0.9

Expansion

5.9 (Molar:5.9)

LOI

11.9

Cost

9.52 per kg

Notes

*This is an adjustment to G3933 for a little more matteness and a little more variegation (this has more iron, more G2934, more rutile.

This also works with Alberta Slip.

We tried adding gum: 900 water, 100 gumsol with 1200g powder. That dried much too slowly and did not drain well.

On subsequent mixes for each 1000 powder we started with 930 water (increasing as needed). This produced a creamy slurry that worked very well.

Pictures

G3933 vs G3933A at cone 6

Using the C6DHSC schedule.

G3933A cone 5

Using the C5DHSC firing schedule.

G3933A cone 5 on L4484D black porcelain

Using the C5DHSC firing schedule.

G3933A G2934:G2926B Oatmeal on dark, light body

Standard cone 6 C6DHSC firing schedule on M390, M340.

G3933A On M340, Coffee clay

Drop and soak, 250c/hr down to 1400C.

XML (to paste into Insight)

<?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="G2934:G2926B Oatmeal Cone 6 #2" id="211015" key="YsHJa1Y6" date="2023-10-31" codenum="G3933A"> <recipelines> <recipeline material="G2934 Matte Glaze" lookup="G2934" amount="80.000" tolerance=""/> <recipeline material="G2926B Glossy Glaze" lookup="G2926B" amount="20.000" tolerance=""/> <recipeline material="Red Iron Oxide" amount="1.500" added="true"/> <recipeline material="Tin Oxide" amount="5.000" added="true"/> <recipeline material="Rutile" amount="1.500" added="true"/> </recipelines> </recipe> </recipes>

Born: 2021-10-27, Modified: 2023-10-31 21:15:21