I am aware of the importance of the COE in ordinary fusing, and, in
enameling itself, both sides of the metal are coated to minimize warping.
But, I just recently saw a late 19th century German bowl, which was of
thick black glass, yet sat ensconced in a filigreed, silvery metal,
"container". The outside surface of the bowl that did penetrate the
filigree was entirely flush with the metal, all brought to a high polish,
so that they almost seemed of one material. The effect was wonderful.
I have thought of several ways of accomplishing this, none
satisfactory, since they all a*** upon the COE problem. This piece,
lovely as it is, does not strike me as a one of a kind tour de force, but
rather something produced commercially. So, how was it done? I am anxious
to know if anyone has an idea.