Clay Recipe

 
VISIT THESE 
CERAMICS LINKS

*************************
Bowl Assignment

Castable for Soda Kiln


Ceramics Courses


Ceramic Links


Clay Lessons for Schools


Clay Recipe


Coil Building Assignment


Cleaning & Working Safely


Cylinder Assignment


Hazards in Ceramics


Hints for Potters


Learning to Throw Pots


Marvin Bartel Home Page


Marvin Bartel Pottery


Bartel Exhibition Catalog


Bartelart.COM


Ceramics Alumnus, Tom U


Ceramics Alumnus, Dick L


Contact Marvin Bartel

Goshen College Home

bartelart.com

Goshen College Art


 
 

 

updated October 2003
  • This is the recipe for the Goshen College stoneware clay body.  We use it for stoneware fired to cone 8 to 11 with no problems
  • It also works okay for raku.  For large raku pieces, add more sand or grog.
  • These are not percentages.  These are parts by dry weight - not volume - we use pound
  • ********************************************
    • Custer Feldspar             13  lbs. (this is a flux) (required to prevent quartz inversion stress)
    • Flint (200 mesh silica)     6  (to help glazes fit)
    • OM 4 Ball Clay               18  (highly plasticity - high temp)
      - a Kentucy clay

        Mix these three (above) with water to make a mush, then add the following to the mix

    • 6-tile Kaolin           21  (for high temp firing)
      - a Georgia clay
    • Goldart clay          14  (cheap stoneware that throws well)
      - an Ohio clay
    • Hawthorn fireclay 10  (fairly plastic high temp clay) 
      - a Missouri clay
    • Grog                        5  (opens - reduces shrinkage
        •  
        Mix with as much water or previously mixed scrap clay mush as needed and let it age a week or more if you have the time.

        Sometimes I like more brown iron spots.  
        For iron spots add 3 to 5 pounds per 100 of red "potters clay" from Edicott Clay, Box 17, Fairbury, Nebraska 68352.  This works well in reduction firing at cone 8 to 10, but does not show in oxidation firing.   This clay can be wedged in or mixed in from the start.

        Marvin Bartel

        Also see 
        Studio Potter article by F.H.Norton 
        "Clay: Why It Acts The Way It Does"
         
        Back to the Goshen College Ceramics Page

                                   All rights reserved. Goshen College students may make one copy for their
                                   own use.  Others need to E-mail marvinpb@goshen.edu for permission to
                                   publish any part of this document. 

    photo © Marvin Bartel Dragonfly Vase 1997
    click image for larger veiw  -  use back button to return here