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Ingredients

Ingredient Amount
Ruggles and Rankin Green/Blue Slip 50.00
Rutile Terra Sigillata 50.00

Instructions

Published in "Recipes for Salt & Soda" in the Feb 2015 issue of Ceramics Monthly.

A thin slip created by combining a terra sigillata and a slip engobe.
Mix equal parts of the Ruggles and Rankin Green/Blue Slip and the Rutile Terra Sigillata.

Ruggles & Rankin Green/Blue Slip

Borax - 4.3%

Nepheline Syenite - 26.1%

EPK Kaolin - 17.4%

OM4 Ball Clay - 26.1%

Silica - 26.1%

Add: Bentonite 1.7%

Cobalt Carbonate - 2.6%

Chrome Oxide - 3.5%

Terra Sigillata

Ball Clay (OM4) - 4500 g

Water - 3 gal

Lye (or Calgon) - 48 g

Mix well, let stand at least 24 hours. Siphon and use the top 2.3 portion. Discard the bottom 1/3 portion. For a red terra sigillata use Cedar Heights Redart as a substitute for the ball clay. Ball mill or let stand for at least one week.

For a rutile color, add 20 grams of rutile to 500 ml of the OM 4 Terra Sigillata.

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