Crackle slip

Here is a nice slip combo:

Crackle Slip cone 10

20 Custer Feldspar
15 Kaolin
20 Calcined Kaolin
15 Ball Clay
20 Silica
5 Borax
5 Zircopax

Archie Bray Black Slip cone 10

80 Alberta Slip
20 Ball Clay

Add:
7.8 Chrome Oxide
1.7 Cobalt Oxide
1.7 Red Iron Oxide
2.0 Bentonite

(page 62 and 156 in my book respecitively.)

John Britt
www.johnbrittpottery.com/wks.htm
http://penlandpottery.com/pages/home.php
http://ncclayclub.blogspot.com/