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Harry Hearne Turning Point Clay Studio 174 Old Highway 64, Murphy, NC 28908 PO Box 23, Brasstown, NC 28902 Raku Glaze Recipes White Crackle


60 Gerstley Borate 50 Custer Feldspar 22 Barium Carb or Strontium Carb 16 Silica _________________ 1/2% Tin Oxide Blue/Black Copper White Crackle + 4% Copper Carb 2%copper Oxide 2% cobalt Carb Dark Green White Crackle + 5% Copper Carb

Copper Matt 4 Parts Gerstley Borate 2 Parts Bone Ash 1/2 Part Copper Carb 1/8 Part Cobalt Carb

Red Bronze 50% Gerstley Borate 50% Frit 3134 3% Tin Oxide 2% Copper Oxide

Reduce in the kiln to get an oxblood red.

Sassy Blue 85% Frit 3110 5% Neph Sy. 10% EPK _____________ 34% Magnesium Carb 1% Cobalt Carb .5% Epsom Salt

It needs to be fired to about 2000 degrees farenheit for the glaze to mature. You know it is ready when the edges of the bubbles go from angular to round.

Dolphine Blue 7Parts Gerstley Borate 3Parts Bone Ash 2 Parts Neph Sy. 1 Part Cornwall Stone 1 Part Copper Carb 3/4 Parts Cobalt Oxide Runny Red (AKA) Copper Red 50% Gerstley Borate 50% Borax 20% Copper Oxide 5% Red Iron Oxide

Used under Copper Matt and Dolphine Blue, it will flux the glaze on top leaving whatever marks you have applied with the Copper Red.

Gloss Blue

50% Gerstley Borate 50% Borax 2% Cobalt Carb

Yellow Gold 63.2 Gerstley Borate 15.8 Nepheline Syenite 13.1 Frit 3110 7.9 Lithium carb 3.0 Silver Nitrate 1.0 Yellow Ochre

Rutile Fog 40 Gerstley Borate 20 Spodumene 25 Lithium Carb. 15 Zircopax 15 Rutile 5 Copper Carb.

Creepy Crawly 50 Gerstley Borate 30 Frit 3134 20 Cornwall Stone 40 Magnesium Carb

Rick's Turquoise 982 gerstley borate 495 nepheline syenite 505 spodumene 515 lithium 477 zircopax 65 copper carbonate ---------------------------------------------3039 Add 2% bentonite to this batch. A delicate turquoise color with eggshell texture. Delicate copper reduction effects.

(to buy your glazes online one option is, thanks Tricia for this info!)

For Image Transfers, use a laser printer that has iron oxide in the toner (we have a Canon MF3200 series laser printer). We print on waterslide decal paper purchased from; apply the decals to a finished cone 6 piece, then refire to 04. Test glaze combinations and firing times. More info can be found in the Paul Wandless Image Transfer on Clay (Lark ceramics book) Most glazes we use are mixed from recipes in our studio. For cone 6 glazes we sometimes use Mid-South Ceramics Opulance glazes, We use Highwater Clay’s Raku clay, For more glaze information, workshop events or show schedules, please visit our website:

Raku glaze recipes  
Raku glaze recipes