Laura Freedman on fri 18 apr 97
I have done a few glaze tests and been satisfied with the tests. I have
made big batches of 3 of them and sieved them with an 80 and 100 mesh.
When used immediately they were fine. Now a week later there are lumps
in the glazes. This is after I thoroughly mix. No thickness on bottom
but little floating lumps that are not seen when mixed, but when I put
my hand in, the lumps stick to my hand. I have pots with little lumps.
It's nothing that I can rub in and smooth out. When I do that the lumps
pop off and there is the unglazed pot. What is happening? I put a
little epsom salts in one but it has not helped. One recipe includes
G.Borate, Epk, Silica, bentonite, chromium ox., cobalt carb. The other
one has nyp.syenite, epk, g.borate, silica, zircopax. Any thoughts would
be appreciated. Could it be the water?
lauras@epix.net
Olivia T Cavy on sun 20 apr 97
Laura-
I'm sure you'll get answers of a more technical nature, but I just
(yesterday!) bought a
nifty gadget made by Braun called a Hand Blender. This is a hand held
approx 12"
long tube with a rotating blade at the bottom (well protected). I bought
this specifically
for mixing glazes in 500 gram or less batches. It mixes fantastically
well and does not
splatter. (Carla Flati had mentioned this to me and shown me hers--I
can't take credit
for the idea.)
I find that many glazes that sit for a while seem to get lumpy, and have
not identified
specific ingredients. However, I like those glazes and it's hard enough
to find good
glazes ^6 oxidation without barium and other problem ingredients.
I have great hopes for this $20 gadget.
Bonnie Hellman in Pittsburgh
PS Hope you get this message without errors; I've had problems with Juno,
which is the provider we have at work. My home e mail is:
mou10man@sgi.net
On Fri, 18 Apr 1997 06:52:21 EDT Laura Freedman writes:
>----------------------------Original
>message----------------------------
>I have done a few glaze tests and been satisfied with the tests. I
>have
>made big batches of 3 of them and sieved them with an 80 and 100 mesh.
>When used immediately they were fine. Now a week later there are lumps
>in the glazes. This is after I thoroughly mix. No thickness on bottom
>but little floating lumps that are not seen when mixed, but when I put
>my hand in, the lumps stick to my hand. I have pots with little lumps.
>It's nothing that I can rub in and smooth out. When I do that the
>lumps
>pop off and there is the unglazed pot. What is happening? I put a
>little epsom salts in one but it has not helped. One recipe includes
>G.Borate, Epk, Silica, bentonite, chromium ox., cobalt carb. The other
>one has nyp.syenite, epk, g.borate, silica, zircopax. Any thoughts
>would
>be appreciated. Could it be the water?
>lauras@epix.net
>
Malone & Dean McRaine on mon 21 apr 97
Those hand blenders are great for glaze tests and other small batches.
Vulnerable, though. I've burned through three of them in a couple of years.
I buy them at garage sales, they're a common item. The bearings erode
because they're not made to handle the gritty nature of glaze ingrediants.
Dean
With Aloha blessings,
Malone
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