louroess2210 on sat 1 apr 06
On Apr 1, 2006, at 12:20 PM, Ron Roy wrote:
> Hi Lou,
>
> The Teal blue - using frit 3124 will not melt well at cone 6 for
> starters -
> should that be frit 3134?
Ron,I rechecked the recipe and you are absolutely right - it should
have been 3134. I will remix a test batch and try again
>
> That may explain what seems to me to be an undermetlt problem.
Given that it's an undermelt problem, I still can't figure out why
the outside was so smooth and glossy (in spite of the pinholes) but
the inner surface was pebbly. Wouldn't the piece have gotten as much
heat work on the inside as it did on the outside?
>
> You did not say which you used for the white - GB or 3134? If you
> are using
> currently available GB that may explain the undermelting as well.
3134. I am trying to use 3134 instead of GB whenever I can
because of the variability of GB.
>
> If you refire that bowl and theresult is better - which is like
> going a
> cone higher - that will confirm what I think is happening. If the
> pin holes
> get worse - then it may be a bisque firing problem.
I'm going to put the bowl in my next firing. I'll be sure and let you
know the results.
>
> So - if you answer my questions I may be able to be more specific.
>
> RR
Thank you so much for your help. I love the color and would like to
be able to use it reliably.
Lou
louroess2210 on sun 2 apr 06
On Apr 2, 2006, at 4:19 PM, Ron Roy wrote:
Ron, I don't remember this particular bowl but my usual routine is to
glaze the inside first,
then as soon as it dries enough to touch, I put my hand inside to
hold it, and pour the outside.
If you don't have enough glaze to dip, how do you glaze your pots?
Thanks again,
Lou
>
> Hi Lou,
> I don't understand that as well - usually you get more melting
> inside pots.
> Perhaps it's because the inside was glazed first then - when the
> outside
> was glazed the inside glaze liffed a little? Happens - how soon did
> you
> glaze the outside after you glazes the inside?
> RR
>
>> Given that it's an undermelt problem, I still can't figure out why
>> the outside was so smooth and glossy (in spite of the pinholes) but
>> the inner surface was pebbly. Wouldn't the piece have gotten as much
>> heat work on the inside as it did on the outside?
>
Ron Roy on sun 2 apr 06
Hi Lou,
I don't understand that as well - usually you get more melting inside pots.
Perhaps it's because the inside was glazed first then - when the outside
was glazed the inside glaze liffed a little? Happens - how soon did you
glaze the outside after you glazes the inside?
RR
>Given that it's an undermelt problem, I still can't figure out why
>the outside was so smooth and glossy (in spite of the pinholes) but
>the inner surface was pebbly. Wouldn't the piece have gotten as much
>heat work on the inside as it did on the outside?
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Ron Roy on tue 4 apr 06
Hi Lou,
I would call that way of glazing pretty normal - I have seen inside glaze
lift a bit if the pot gets soaked from the first inside coat - when the
outside glaze is applied.
The next question would be - is the pebbling on the inside in any
particular area - like where the clay is thin - or thick? How thick is you
glaze in the bucket when you apply it - describe what a dry finger looks
like when you dip it in well stirred glaze.
RR
>On Apr 2, 2006, at 4:19 PM, Ron Roy wrote:
>Ron, I don't remember this particular bowl but my usual routine is to
>glaze the inside first,
> then as soon as it dries enough to touch, I put my hand inside to
>hold it, and pour the outside.
> If you don't have enough glaze to dip, how do you glaze your pots?
>Thanks again,
>Lou
>>
>
>> Hi Lou,
>> I don't understand that as well - usually you get more melting
>> inside pots.
>> Perhaps it's because the inside was glazed first then - when the
>> outside
>> was glazed the inside glaze liffed a little? Happens - how soon did
>> you
>> glaze the outside after you glazes the inside?
>> RR
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
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