8 
KERAMIC STUDIO 
DESIGN FOR GLASS— LOLA A. ST. JOHN 
Use two kinds of Gold or Gold and Enamels. 
ender oil is not always pure and dependable; furthermore, it 
keeps your lustre open too long and it will gather dust. 
Enamel decorations on glass will not chip off, but are apt 
to boil and become sponge-like. 
There are transparent colors in powder, also opaque colors 
in powder, and both may be used for glass decoration. In mix- 
ing them for painting on glass, add to your medium a trifle of 
sweet oil. This oil will prevent blistering. 
All glasses should be perfectly clean before you paint them. 
Use alcohol or soap suds and dry with a lintless rag. 
GENERAL SUGGESTIONS ON GLASS DECORATIONS. 
D. M. Campana 
BREAKAGES in glass firing are not more numerous than 
breakages in china. They are generally caused at the 
foot of the glass, where glass is thicker and slow to expand 
during the firing. For this reason lift glasses up from the bottom 
of the kiln and protect them from too quick heating. 
A common mistake in glass decoration, with all over lustre 
effect, is to forget to apply the lustre on some spots. You will 
notice how easily a small part of the glass is overlooked when 
you cover with lustre. And such a mistake can not very easily 
be corrected. 
In cleaning lustre pieces, do not use powder soaps, as this 
will affect the lustres, especially gold colors, such as Rubies, 
Maroons, Roses, etc.; rather use alcohol or light soap suds. 
In burnishing a gold line or gold design, fired over lustre, 
I would suggest agate burnishers, so as not to scratch the lustre. 
All qualities of glass will decorate and fire; however, a good 
quality of crystal will have a far better brilliancy and beauty 
than a cheap material glass. It is the same in china decoration. 
All china will fire and decorate, but some of the cheap varieties 
you would not wish to have exhibited in your home. 
In glass work, always try to decorate pretty, artistic shapes 
of good crystal quality, and you will always have a good value. 
The strongest attractiveness of glass is its transparency. 
It is beautiful. The more you cover this transparency with 
opaque colors, the worse will the glass look. Hence I advocate 
' lustres, because they do not cover or affect the most important 
quality of glass. 
Glass can be printed, etched and powdered, etc., just like 
china. It can be fired as many times as you desire. 
When properly fired glass decorations will stand as much 
use as china will. 
In sending out glasses to be fired, see that your decorations 
are perfectly dry and wrap in tissue paper rather than cotton. 
If you wish to thin lustre colors, always use Essence for 
Thinning Lustre. This article is purposely made for it. Lav- 
CONTRARY MARY MOTIF-LEAH RODMAN TUBBY 
