PART IV Recipes
Reading edition
While the purpose of this work is not so much to put ready-made materials into the hands of the craftsman as to enable him to work out his own plans, it is recognized that there are some workers who lack the training and even the patience to do this. For these, the following recipes are given, but with the proviso that no recipe can be regarded as perfect for all conditions. Just as an untrained cook can spoil a dinner even when surrounded by cookery books, so the best of recipes will fail when unskillfully treated. One must be prepared to recognize the faults which are sure to develop and to correct them in an intelligent manner. The previous chapters should therefore be carefully studied, not alone for the information but because "the joy of the working" depends greatly upon the knowledge one has of the operations involved and a modest confidence in one's own powers.
1. Bright raw glaze.
Cone .06
PbO.60}
CaO.25}Al2O3.15SiO21.45
K2O.15}
Mix:
White Lead155
Whiting25
Feldspar55.7
Kaolin13
Flint45
Grind, with one-half pint of water, for one hour.
2. Bright raw glaze.
Cone 1
PbO.45}
ZnO.15}Al2O3 .20SiO21.60
CaO.25}
K2O.15}
Mix:
White Lead116
Whiting25
Zinc Oxide12
Feldspar83
Kaolin13
Flint36
3. Bright fritted glaze.
Cone .02
PbO.25}
ZnO.15}Al2O3 .15}
CaO.30}B2O3 .30}SiO2 2.35
Na2O.20}
K2O.10}
Mix:
Fritt Glaze
Borax114Fritt117
Whiting60White Lead64
Soda Ash10Zinc Oxide12
Spar56Spar28
Flint78Kaolin13
Flint60
Grind as before.
4. Matt glaze.
Cone .02
PbO.50}
CaO.30}Al2O3 .34SiO2 1.48
K2O.20}
Mix:
White Lead129
Whiting30
Spar111
Calcined Kaolin22
Kaolin11
5. Matt glaze.
Cone 7
CaO.75}Al2O3 .55SiO2 2.10
K2O.25}
Mix:
Feldspar139
Whiting75
Calcined Kaolin55
Kaolin13
For colored glazes add to any of the above:
Blue:
Cobalt Oxide3 parts
Slate blue:
Cobalt Oxide3 parts
Nickel Oxide1 part
Warm blue:
Cobalt Oxide2 parts
Iron Oxide1 part
Green:
Copper Oxide8 parts
Blue green:
Copper Oxide8 parts
Cobalt Oxide1 part
Cool green:
Copper Oxide8 parts
Cobalt Oxide1 part
Nickel Oxide2 parts
Olive green:
Copper Oxide6 parts
Iron Oxide4 parts
Orange brown:
Iron Oxide8 parts
Red brown:
Iron Oxide8 parts
Chrome Oxide1 part
Zinc Oxide3 parts
Yellow:
Uranium Oxide3 parts
The coloring oxides should be weighed out and ground with the glaze. Any of the colors may be mixed together in order to modify the hue obtained or the amount of each coloring oxide may be varied to give a stronger or weaker value.
Opaque tin enamel.
Cone .02
PbO.40}
CaO.25} {SiO21.75
K2O.20}Al2O3 .25{SnO2 .30
ZnO.15}
Mixture:
White Lead103
Whiting25
Feldspar111
Zinc Oxide12
Kaolin13
Flint27
Tin Oxide45
Grind, with one-half pint of water, for 45 minutes.