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clear glaze for porcelain

updated mon 31 mar 97

 

Claudia Louise Palermo on wed 10 jul 96

I am currently in the process of making small porcelain vases and
flower bowls for my wedding next year. My plan is to glaze them with a
clear and use gold leaf to band them. Does any one out there have a good
and VERY reliable clear glaze recipe that works well on cone 6-7
porcelain?

I also just ordered liquid gold that fires to 018. Did I do the right
thing? I haven't used metallic lusters in about 10 years and can't
remember the fine details.

Thanks!
Claudia

Tricia Chatary on sat 22 mar 97

I've been using Coile Hooven's recipe for clear glaze for porcelain
with good results. It doesn't crackle/craze (eye of the beholder thing) and
can run the gamut from non-milky matte at lower temp to a nice high gloss at
c.10-11. Forthwith:
(The recipe lists it as "Cone 10 Clear")
WHITING 9
ZINC OXIDE 7
CORNWALL STONE 79 (use a mortar & pestle before mixing)
EPK 5

I use this over a porcelain throwing body from Val Cushing's notebook
(published and distributed during Summer Class 1993):
GROLLEG 55 (1 full bag)
KONA 4 SPAR 20
FLINT 12
PYRAX 13
MACALOID 2
(or Bentonite: let sit with water in mixer overnight. Add dry mix next
day)
As with any porcelain, the longer it ages, the better. I make mine
ideally 6 months in advance, wrapped a la the "Alfred Roll" in 35# batches.

Hope this helps.
Tricia
CHATARY@HOPE.CIT.HOPE.EDU