Hi Marianne, I know you addressed your inquiry to Linda, but I
thought Id chime in too. In addition to making small enameled
jewelry. I also make large wall enamels consisting of many pieces put
together jigsaw fashion. I often fire scalex on the final coat of
counter enamel, which gives the piece a tooth as it seems that the
silicon sealant which I use to adhere them to the mounting board
seems to grip better. I was taught this method by Florinda Leighton
from whom I learned large scale enameling.
In all the years I have been using the scalex over enamel, I have
never once had any flake off either in the kiln or out of it when
fired on a counter enamel. It fuses (for lack of a better word), into
the enamel, giving a rough surface. It does flake off of bare metal,
but not off metal that is coated with enamel.
I have tried titianium sheet as well - it is just about as messy as
mica, in that titanium leaves a firescale on the back of your piece.
Repeated firings of the titanium creates more and more scale that can
flake off and pop onto your piece. I still maintain that counter
enameling a layer or two, then firing on a thin wash of Scalex, which
adheres to the enamel, but leaves a slightly rough surface, is the
best method. I’ve fired pieces repeatedly, directly on a screen, and
it never sticks. Try it - you’ll like it! In answer to Marianne
Hunter’s question - if applied in a thin wash - it bonds with the
enamel. A thicker application may leave places that could flake off.
Just check the back after it cools - perhaps with a scotch brite pad
- to see if there are any loose places, and scour them off. The
traditional use for Scalex is to paint on bare copper to prevent
firescale. This is sort of a waste of time in my book. Easy enough
to pickle the bare side.
The traditional use for Scalex is to paint on bare copper to
prevent firescale. This is sort of a waste of time in my book. Easy
enough to pickle the bare side.
Back in the days when we were all using lead based enamels (and I
still do) if you used copper and transparent blues and you put that
in Sparex to remove the firescale you would lose much of the
transparency of the blue enamel; it looked hazy. The lead free
enamels don’t react to Sparex.
Donna in VA