Monthly Tech-Tip from Tony Hansen SignUp

No tracking! No ads!

BORY1 - Bory 1 Crystalline Glaze
CELECG - Celestite Crystalline Glaze
FAAO - Fa's All-Opaque Crystalline Glaze
FAC5 - Crystal Number Five Glaze
FO - Octal Crystalline Glaze
G1214M - 20x5 Cone 6 Base Glossy Glaze
G1214W - Cone 6 Transparent Base
G1214Z1 - Cone 6 Silky CaO matte base glaze
G1215U - Low Expansion Glossy Clear Cone 6
G1216L - Transparent for Cone 6 Porcelains
G1216M - Cone 6 Ultraclear Glaze for Porcelains
G1916Q - Low Fire Highly-Expansion-Adjustable Transparent
G1947U - Cone 10 Glossy transparent glaze
G2000 - LA Matte Cone 6 Matte White
G2240 - Cone 10R Classic Spodumene Matte
G2571A - Cone 10 Silky Dolomite Matte glaze
G2826R - Floating Blue Cone 5-6 Original Glaze Recipe
G2826X - Randy's Red Cone 5
g2851H - Ravenscrag Cone 6 High Calcium Matte Blue
G2853B - Cone 04 Clear Ravenscrag School Glaze
G2896 - Ravenscrag Plum Red Cone 6
G2902B - Cone 6 Crystal Glaze
G2902D - Cone 6 Crystalline Development Project
G2916F - Cone 6 Stoneware/Whiteware transparent glaze
G2926B - Cone 6 Whiteware/Porcelain transparent glaze
G2926J - Low Expansion G2926B
G2928C - Ravenscrag Silky Matte for Cone 6
G2931H - Ulexite High Expansion Zero3 Clear Glaze
G2931K - Low Fire Fritted Zero3 Transparent Glaze
G2931L - Low Expansion Low-Fire Clear
G2934 - Matte Glaze Base for Cone 6
G2934Y - Cone 6 Magnesia Matte Low LOI Version
G3806C - Cone 6 Clear Fluid-Melt transparent glaze
G3838A - Low Expansion Transparent for P300 Porcelain
G3879 - Cone 04 Transparent Low-Expansion transparent glaze
GA10-A - Alberta Slip Base Cone 10R
GA10-B - Alberta Slip Tenmoku Cone 10R
GA10-D - Alberta Slip Black Cone 10R
GA10x-A - Alberta Slip Base for cone 10 oxidation
GA6-A - Alberta Slip Cone 6 transparent honey glaze
GA6-B - Alberta Slip Cone 6 transparent honey glaze
GA6-C - Alberta Slip Floating Blue Cone 6
GA6-D - Alberta Slip Glossy Brown Cone 6
GA6-F - Alberta Slip Cone 6 Oatmeal
GA6-G - Alberta Slip Lithium Brown Cone 6
GA6-G1 - Alberta Slip Lithium Brown Cone 6 Low Expansion
GA6-H - Alberta Slip Cone 6 Black
GBCG - Generic Base Crystalline Glaze
GC106 - GC106 Base Crystalline Glaze
GR10-A - Pure Ravenscrag Slip
GR10-B - Ravenscrag Cone 10R Gloss Base
GR10-C - Ravenscrag Cone 10R Silky Talc Matte
GR10-E - Alberta Slip:Ravenscrag Cone 10R Celadon
GR10-G - Ravenscrag Cone 10 Oxidation Variegated White
GR10-J - Ravenscrag Cone 10R Dolomite Matte
GR10-J1 - Ravenscrag Cone 10R Bamboo Matte
GR10-K1 - Ravenscrag Cone 10R Tenmoku
GR10-L - Ravenscrag Iron Crystal
GR6-A - Ravenscrag Cone 6 Clear Glossy Base
GR6-B - Ravenscrag Cone 6 Variegated Light Glossy Blue
GR6-C - Ravenscrag Cone 6 White Glossy
GR6-D - Ravenscrag Cone 6 Glossy Black
GR6-E - Ravenscrag Cone 6 Raspberry Glossy
GR6-H - Ravenscrag Cone 6 Oatmeal Matte
GR6-L - Ravenscrag Cone 6 Transparent Burgundy
GR6-M - Ravenscrag Cone 6 Floating Blue
GR6-N - Ravenscrag Alberta Brilliant Cone 6 Celadon
GRNTCG - GRANITE Crystalline Glaze
L2000 - 25 Porcelain
L3341B - Alberta Slip Iron Crystal Cone 10R
L3685U - Cone 03 White Engobe Recipe
L3724F - Cone 03 Terra Cotta Stoneware
L3924C - Zero3 Porcelain Experimental
L3954B - Cone 6 Engobe (for M340)
L3954N - Cone 10R Base White Engobe Recipe for stonewares
MGBase1 - High Calcium Semimatte 1 (Mastering Glazes)
MGBase2 - High Calcium Semimatte 2 (Mastering Glazes)
MGBase3 - General Purpose Glossy Base 1 (Mastering Glazes)
MGBase4 - Glossy Base 2 Cone 6 (Mastering Glazes)
MGBase5 - Glossy Clear Liner Cone 6 (Mastering Glazes)
MGBase6 - Zinc Semimatte Glossy Base Cone 6
MGBase7 - Raspberry Cone 6 (Mastering Glazes)
MGBase8 - Waxwing Brown Cone 6 (Mastering Glazes)
MGBase9 - Waterfall Brown Cone 6 (Mastering Glazes)
- Tin Foil II Crystalline Glaze
VESUCG - Vesuvius Crystalline Glaze

TNF2CG - Tin Foil II Crystalline Glaze

Modified: 2022-10-13 21:49:04

Cone 6-9 - Dolomite, tin, titanium variant

Material	Amount
Ferro Frit 3110	50.00
Zinc Oxide	25.00
Silica	16.00
Dolomite	5.00
Tin Oxide	2.00
Titanium Dioxide	2.00
100.00

Notes

From Crystal Glazes Book 2 by Fara Shimbo, page 66.

Purpose: To alter the shape of the crystals from broad "geranium" petals to narrow "dandelion" or "aster" petals by using tin.

Tin Foil 2 is an excellent low-titanium glaze; in fact, it makes an excellent no-titanium glaze if you just leave the titanium out. On porcelain, it has a very transparent ground, though this does not necessarily hold true on stoneware. I decided to try adding tin to the glaze when I noticed the very interesting effect that chrome-tin pinks had on the crystals; the nearly complete change in character from a flower to a lily pad. Most of this effectis due to chrome, but with chrome being a powerful colorant I didn't want to use it. Tin is generally thought of as an opacifier, but in small amounts like this its only real effect is to change the shape of the crystals, so instead of a daisy, one has a dandelion. Tin Foil 2 crystals are very opaque which makes this an excellent glaze for use with copper colorants. The ground is often slightly yellowish by itself, often varying the color responseof cobalt toward cyan.

Tin Foil has always been an exceptionally reliable glaze for me. I found out that the original would go down to D5 quite by accident one day when the power went out at that temperature. After two hours soaking at 1000°C, I had lovely crystals about 2 cm in diameter. It's been my experience that crystal growth slows down proportionally to the amount of tin in the glaze; so much so that if you add about 4% tin you can grow only a few crystals no more than a centimetre in diameter even after a three-hour soak.

Related Information

Tin Foil crystal glaze

This picture has its own page with more detail, click here to see it.

Two cats made with the Tin Foil base and about 4% red copper oxide. Both of these show the lovely green you can get with copper. Both were fired in a gas kiln; the cat on the left was at the edge of a shelf, close to the flame. The cat on the right was in the center of the shelf. Both were cast of White Stallion porcelain.

Links

Firing Schedules	Shimbo Crystal Schedule 1
Typecodes	Crystalline Glaze Recipes Fara Shimbo These are from Fara's Crystal Glazes books 1 and 2. Most are the frit 3110, zinc, silica base recipe (50:25:25) with small material additions at the expense of silica.

Mechanisms

Crystal Glaze Variations	Crystals produced by this glaze have many narrow "petals" instead of only a few (or one) large, broad petal. Aster or dandelion shaped crystals, ends are often "frilly."
Glaze Color	When used with up to 2% copper carbonate, magnificent true turquoises and cyans result (due to interaction with tin and calcium).

XML to Paste Into Insight-live

<?xml version="1.0"?>
<recipes version="1.0" encoding="UTF-8">
<recipe name="Tin Foil II Crystalline Glaze" keywords="Cone 6-9 - Dolomite, tin, titanium variant" id="74" date="2022-10-13" codenum="TNF2CG" location="Book 2, Page 66">
<recipelines>
<recipeline material="Ferro Frit 3110" amount="50.000"/>
<recipeline material="Zinc Oxide" amount="25.000"/>
<recipeline material="Silica" amount="16.000"/>
<recipeline material="Dolomite" amount="5.000"/>
<recipeline material="Tin Oxide" amount="2.000"/>
<recipeline material="Titanium Dioxide" amount="2.000"/>
<url url="https://digitalfire.com/recipe/74" descrip="https://digitalfire.com/recipe/74"/>
</recipelines>
<urls/>
</recipe>
</recipes>

By Tony Hansen
Follow me on

Got a Question?

Buy me a coffee and we can talk