Enamels and enamelling; an introduction to the preparation and ...

124 ENAMELS AND ENAMELLING.
Felspar-Lead-Oxide Mass of Medium Fusibility.
Flint meal 30 parts.
Felspar
30
Soda* 12 ,,
White Lead 3
Borax 15
fused together and ground with
Felspar
Clay
6-25
11-75
Magnesia 0*75 ,,
Ground Mass for Iron Utensils, No. 1.
Flint meal 30 parts.
Borax 16-5
White lead 3-0
fused together and ground with
Flint meal 9
Clay
Magnesia 0*5 ,,
Ground Mass for Iron Utensils, No. 2.
Flint meal 30 parts.
Felspar 30 ,,
Borax . 25
fused together and ground with
Clay
Felspar
8-6
10-75
Magnesia 1'75 ,,
Ground Mass with Magnesium Sulphate, No. 1 (for Iron
Utensils) .
Flint meal ......... 20
6
parts.
Borax 9
Potash 1 part.
Magnesia
6 parts.
Magnesium sulphate 2 ,,
fused together and ground with
Clay ... . . . . . . . 2
* Anhydrous soda.