Jeff Lawrence on fri 27 dec 96
Wendy Hampton asks why I want to de-zinc my ^04 oxidation glazes
Hi Wendy,
Zinc makes some stain colors mutate. I don't know them all, and ceratinaly
don't know the why. In my experience, zinc turns Mason's affordable black
stain russet (!!) and makes their Walnut brown go red (maybe its a commie
plot!). For a satin black in that glaze, stick with Mason 6600 at 8% (at
twice the price).
Just looking for a more stable base, I'd rather do the zincectomy. But, the
texture gets silkier with more zinc, and I'm a fool for a good mat surface.
A zincy glaze reminds me of some girlfriends I had Before Gigababe ...
wonderful on the surface, but just not reliable enough for a long term
relationship.
Good luck! and try out that Ferro recipe if you need a nice ^04 white. It's
tasty.
Jeff Lawrence
jml@sundagger.com
Sun Dagger Design
ph/fax: 505-753-5913
Craig Martell on sat 28 dec 96
In a message dated 96-12-27 10:01:17 EST, Jeff Lawrence wrote:
<< Zinc makes some stain colors mutate. I don't know them all, and ceratinaly
don't know the why. In my experience, zinc turns Mason's affordable black
stain russet (!!) and makes their Walnut brown go red (maybe its a commie
plot!). For a satin black in that glaze, stick with Mason 6600 at 8% (at
twice the price). >>
Walnut Brown and most of Mason's black stains contain Chrome. Zinc will
react with chrome in the lower temperature ranges to produce variuos shades
of orange.
If you want shades of orange zinc is ok. If you don't, it would be prudent
to follow Jeff's advice and give zinc the "boot". Craig Martell-Oregon
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