Suzanne Storer uses terra sig to create special effect textures on her work. She was kind enough to share her recipes at the 2007 Potters Workshop. Here they are:
Newman Red Sig:
115 grams per 100 ml
4 gal water
20 lb Newman Clay
60 ml Sodium Silicate
makes ½ sheetrock bucket
Hard White Sig:
122 grams per 100 ml
7 pints water
2 lbs Ball Clay
2 lbs EPK
20 ml Sodium Silicate
Ochre Yellow Sig:
5 C. Hard White Sig
5 T. TiO2
10 T. Mason #6485
10 C. Newman Sig
Ball mill more than 2 days because of the mason stain.
All sigs:
Mix ingredients in bucket, let stand 2 days, pour off top liquid, evaporate until 100 ml weighs about 115 grams.