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glaze materials for the beginner***important!***

updated tue 5 sep 00


Earl Brunner on sun 3 sep 00

Asta brings up an important point that should be emphasized
periodically on this list I think. It also has bearing on
the "Old Days discussion".
When we talk about pottery books, and things done in the
early part of the modern craft movement, we need to
remember that **ANYTHING** written before around the mid
80's should not be relied on for current safety issues and
procedures. Often things mentioned or written in older
books are down right dangerous, and could even get you in
trouble with authority types. Especially in school/art
center type settings.
Many things written in earlier books could be grounds for a
lawsuit today.
I collect older books, but I have to remember that
everything written in them has to be measured against
today's standards and understandings.

Asta Jorundardottir wrote:
> I have The Potter's Manual by Kenneth Clark and it has 2 pages on the
> composition of glaze. I kind of understand - I know you have to have
> silica, flux, and alumina, and I think that you add frits to color it? And
> you have to keep some sort of acid / base ratio... I don't understand all
> of it.
> I had 2 years of Chemistry in high school and a year in college, so I think
> I will (eventually) be able to figure out the mixing part. The other
> pottery book I have is from 1949 and it suggests using asbestos so I don't
> use it where there might be toxicity issues. :-)
> >

Earl Brunner