john stromnes on fri 5 feb 99
I need to refire some C.10 glazed ware with a C.04-06 clear glaze to smooth
out some flaws caused by an exploding button in my homemade kiln. Does
anybody have a suggestion of an additive to the low-temperature glaze to
make it stick good on the higher fire glaze? I have CMC, bentonite and
Vee-Gum T in stock, and I've heard that epsom salts will help. Any specific
ideas, re: additive and percentage to use? I can spray, dip, pour or brush.
Thanx
Berry Silverman on sun 7 feb 99
john stromnes wrote:
>
> ----------------------------Original
message----------------------------
> I need to refire some C.10 glazed ware with a C.04-06 clear glaze to
smooth
> out some flaws caused by an exploding button in my homemade kiln. Does
> anybody have a suggestion of an additive to the low-temperature
glaze to
> make it stick good on the higher fire glaze? I have CMC, bentonite and
> Vee-Gum T in stock, and I've heard that epsom salts will help. Any
specific
> ideas, re: additive and percentage to use? I can spray, dip, pour or
brush.
> Thanx
>
There is a product called APT II which you add to glaze -- a few drops
to one ounce, I think -- and then you brush on a thin layer of the
clear glaze. It will help the glaze adhere to an already glazed
surface for refiring. We use it often and it works well. You can get
it at your local pottery supply house, no doubt -- or you can even try
the hobby ceramic suppliers, as well.
==
Berry Silverman,
Berryware, Tucson, Arizona
berrysilverman@yahoo.com
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orion on sun 7 feb 99
A ceramics prof in Ohio suggested a trick to me a few years ago that can
work amazingly well when you need to apply raw glaze on top of already-fired
glaze:
Dry-sponge a thin layer of KARO (corn syrup) over the general area you want
to touch up or reglaze. When the surface is tacky to the touch (when it
feels sort of like the sticky side of tape) apply the top coat(s). The
sugar usually burns away harmlessly in the second firing (I've never had any
trouble with flaws when I've used this trick, anyhow).
You might want to be careful not to over-work the raw top coat too much --
too much wet glaze on the KARO may thin it, making it lose its "grip."
It may be worth a try! Good luck,
Ellen Baker -- Glacier, WA
orion@telcomplus.net
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