If parts can be formed from plate (ie deforming normal sheet of glass)
apparently just heating up over a metal mould will do it.  Apparently
smooth surface is retained providing mould is relatively smooth.      Glass
doesn't actually liquefy - just 'slumps' over mould.  That's how they do
curved glass stuff anyway I believe.

Hope this helps.

Pete S.

At 11:21 PM 2/12/01 +1300, you wrote:
>As part of a PIC project (honestly !!) I need to have some
>components made of glass. I've contacted a company who
>could cut glass with high pressure water/garnet but they
>can't guarantee the work or a low spoilage figure. They
>suggested polycarbonate, and I suggested right back at 'em
>that maybe they could cut a mould out of steel plate and I
>fill it with molten glass. If that fails they will have the cutting
>file for the metal and I'd get them to do it in polycarbonate.
>
>Has anyone in this collective brain of ours any experience,
>suggestions, tips etc for moulding glass ? Getting a smooth
>surface on the top (it's a thin disk) could be tricky. I guess I'll
>have to slide some sort of metal plate on the liquid surface
>
>TIA
>
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