Glass into Metal; How was it done?

Glass into Metal; How was it done?

Post by Akil » Fri, 12 Sep 1997 04:00:00

    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.

 Much Obliged,

 Ethan Gross    


Glass into Metal; How was it done?

Post by DGon » Tue, 16 Sep 1997 04:00:00

I believe the metal is investment cast onto the glass after drawing the
filgree with wax, adding sprues and gates, coating with plaster, and baking
out the wax. There are some low-melting alloys that will finish neatly, but
I don't know what they are. Pewter would be a starting point.

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