Re: [ATM] The results of the glass casting run.

[Dominic-Luc Webb <dlwebb@canit.se>]

On Wed, 12 Jul 2006, James Lerch wrote:

> Very nice work Tom, I love the creative means to an end.
>
> Are those blanks meant to be elliptical secondaries?
>
> Also, as my obligatory crazy idea of the day, have you considered building a
> vacuum chamber large enough to house your kiln?   No more bubble problems, near
> zero oxidation, reduced thermal mass, and probably better temperature control.
> Doesn't have to be a great vacuum, a few Torrs worth of pressure should be fine.


Reducing vs oxidizing environment is in fact a major consideration in
the manufacture of specific types of glass. This affects parameters
such as transmission/absorbance characteristics (i.e., color) of the
glass, which does not seem to be important at this moment. I ran into
this issue when I was considering trying to make borosilicate with
properties similar to Corning Pyrex. Just something for future reference.

Dominic-Luc Webb

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