Digital Studio on tue 19 aug 08
I've just now found the cool recipes in the newest issue of Clay Times.
I recently posted about Mason Stains, and one of the glazes has them in
it. Here is the recipe:
Bright Color Base Cone 6 Ox. (Annie Chrietzberg)
Frit F-38 32
Feldspar 26
Whiting 13
EPK 10
Silica 19
Is there another frit I can substitute for F-38? I don't have that one.
The ones I have are 25, 3110, 3124, 3191, 3195, and 3269. Would any of
those work as a substitute or would they change the glaze too much from
the original?
And in all of the other recipes listed, there is Old Hickory Glaze Clay.
I don't have that either, would OM-4 work instead?
arkey03755 on wed 20 aug 08
hi - i googled fusion frit 38 and came up with ferro frit 3292 as its
equivalent. hope this helps.
eleanor in n.h.
Steve Slatin on mon 25 aug 08
Kendra --
I can't remember having seen a reply
on this, so let me jump in -- if a
better-informed person has already
replied, rely on them and not me.
F-38 is a very special frit -- a
strontium-rich ingredient. Frits
25, 3124, 3191, and 3195 are high
boron, sodium and calcium items,
differing primarily in concentrations.
3269 is similar, but has a small-
to-significant amount of flourine
in it. 3110 is very high sodium.
None of these are like F-38, and
I wouldn't expect the same results
with any of them. OTOH, any of
them might well get you a decent
clear glaze, and you might like
the results. The color responses
that you get with strontium, though,
will most likely not occur with any
of these substitutions.
The Old Hickory/OM-4 question is
even more complex. OM-4 has about
55% silica, and 28% alumina. The
only other item of note in it is
1 % potassium. Most of the rest of
the mass is lost on ignition. But
the analysis varies -- it's a raw,
mine-run product as I understand it.
Old Hickory is 62% silica, 24% alumina,
1 percent Iron Oxide and over a percent
titanium and potassium. That can make
a difference in a glaze ... maybe. How
much clay is in the glaze, though? If
you've got something like 2% of clay by
weight in the glaze, whether you use one
or the other probably won't make a
significant difference. If your glaze
has 10% ball clay in it, though, then
I'd expect that the Old Hickory formulation
would be more opaque than the OM-4 -- and
there may be differences in the degree of
melt and runniness as well.
Best wishes -- Steve Slatin
--- On Tue, 8/19/08, Digital Studio wrote:
> I've just now found the cool recipes in the newest issue
> of Clay Times.
> I recently posted about Mason Stains, and one of the glazes
> has them in
> it. Here is the recipe:
>
> Bright Color Base Cone 6 Ox. (Annie Chrietzberg)
> Frit F-38 32
> Feldspar 26
> Whiting 13
> EPK 10
> Silica 19
>
> Is there another frit I can substitute for F-38? I
> don't have that one.
> The ones I have are 25, 3110, 3124, 3191, 3195, and 3269.
> Would any of
> those work as a substitute or would they change the glaze
> too much from
> the original?
>
> And in all of the other recipes listed, there is Old
> Hickory Glaze Clay.
> I don't have that either, would OM-4 work instead?
Ron Roy on wed 27 aug 08
Pemco has a duplicate frit - P-930.
RR
>--- On Tue, 8/19/08, Digital Studio wrote:
>
>> I've just now found the cool recipes in the newest issue
>> of Clay Times.
>> I recently posted about Mason Stains, and one of the glazes
>> has them in
>> it. Here is the recipe:
>>
>> Bright Color Base Cone 6 Ox. (Annie Chrietzberg)
>> Frit F-38 32
>> Feldspar 26
>> Whiting 13
>> EPK 10
>> Silica 19
>>
>> Is there another frit I can substitute for F-38? I
>> don't have that one.
>> The ones I have are 25, 3110, 3124, 3191, 3195, and 3269.
>> Would any of
>> those work as a substitute or would they change the glaze
>> too much from
>> the original?
>>
>> And in all of the other recipes listed, there is Old
>> Hickory Glaze Clay.
>> I don't have that either, would OM-4 work instead?
Ron Roy
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Lynn Goodman Porcelain Pottery on wed 27 aug 08
So who sells either one? I can't find them.
Lynn
On Aug 27, 2008, at 3:10 PM, Ron Roy wrote:
> Pemco has a duplicate frit - P-930.
>
> RR
Lynn Goodman
Fine Porcelain Pottery
Cell 347-526-9805
www.lynngoodmanporcelain.com
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