Low Temperature
and Raku Glazes
(below 1000°C)

Submitted by

Janet Jackson

Recipe

Lead Bisilicate	90
Alkaline Frit	20
Copper Carbonate	4
Cobalt Carbonate	3
Red Iron Oxide	4
Bentonite	3

Formula

 

Application and Firing

Apply by brush or pouring - useful in combination with other glazes. A bright lusterous black with heavy or light post firing reduction.

Credits etc

Tim Proud

Submitted by

Tony Foard

Recipe

Borax frit (Potterycrafts P2955)	95
China clay	5
Tin oxide	5

Formula

 

Application and Firing

This is the white crackle glaze that I use on the insides of most of my raku bowls. It is best left to cool a little in the air after removing from the kiln. Then plunge into sawdust and cover with sawdust.
Potters tip - A good way of measuring small amounts of glaze if you only have a rudimentary set of scales and weights that are not small enough is to get £1 worth of pennies and use them as weights.

Credits etc

 

Submitted by

Angela Howe

Recipe

Calcium Borate frit	80
Borax frit	80
China clay	30
Tin oxide	10
Cobalt	6
Red iron oxide	8
Coper carbonate	10

Formula

 

Application and Firing

 

Credits etc

This is based on a nameless recipe I found on the Web and messed around with!

Submitted by

Nichola Hanman

Recipe

Gerstly Borate	35
Frit 3110	65

Formula

 

Application and Firing

Make a slip from 60% China clay, 40% flint. Mix to a full cream milk consistency and sieve five or six times. Apply to work at least 24 hours before glaze application. The glaze should be mixed to consistency of cream to liquid yoghurt. Fired to correct temp when the glaze has an "orange peel" effect.

Credits etc

Slip: Dave Roberts
Glaze: Bill and Kate Jacobson
Both from from Fired Up with Raku by Irene Poulton

Submitted by

Jane Bridger

Recipe

Borax Frit	24
Alkali Frit	63.4
Tin Oxide	4
Bentonite	4
Coper Carbonate	4.6

Formula

 

Application and Firing

If treated like white crackle a beautiful Persian type turquoise with crackles will emerge from the bin. If plunged quickly into sawdust and covered, there will be a reduction of oxygen giving copper reds.

Credits etc

 

Submitted by

Jane Bridger

Recipe

Copper oxide	80
Alkali frit	5
China Clay	10
Bentonite	2

Formula

 

Application and Firing

Remove from the klin, place on a layer of sawdust and cover with a metal tin. After approx. 20 seconds lift tin very quickly and replace sllowing a blast of oxygen intor the container. Seal with sawdust

Credits etc

 

Submitted by

Jane Bridger

Recipe

Alkali frit	85
Borax frit	15
Tin oxide	2
Bentonite	3
Cobalt oxide	0.5
Copper carbonate	2

Formula

 

Application and Firing

Plunged quickly into sawdust this will give purple/blue with copper reds.

Credits etc

 

Submitted by

Jane Bridger

Recipe

Gerstly Borate	50
Alkali Frit	50
Tin oxide	5.1
China Clay	10
Copper oxide	4.3

Formula

 

Application and Firing

Plunged into sawdust will give copper red. Post firing reduction with newspaper can give rainbow colours. Put onto paper and cover with paper. When this catches light cover wit lid. after 10 seconds lift lid to allow paper to reignite. Cover.

Credits etc