Richard Gralnik on wed 7 jul 99
Some old clayart sage made a suggestion in this regard that works
beautifully -
Laminate your glaze recipe pages with clear contact paper and keep them in
a binder. When you mix a glaze, mark off each ingredient with a white board
pen. Once the mix is done you can wipe the notes off the contact paper for
next time. (This also protects the page from splashes and spills and makes it
harder to tear the page out of the binder.)
Richard
At 09:11 AM 7/6/99 -0400, you wrote:
>----------------------------Original message----------------------------
>Nancy,
>
>I understand that you have asked a different question, but since after
>having the same problem with "remembering" where I was when making up a
>glaze, I started adding another process to my glaze making.
>
>I ALWAYS keep a pencil nearby when making my glazes. After adding EACH
>ingredient, I place a small check mark next to that ingredient. Often I
>re-write the ingredients with the quantity I will be using on a separate
>page. And if I need to weigh an ingredient in 2 or more batches, I write
>it out that way so I can check off EACH weighing.
>
>For example, if I were using 1640 grams of potash feldspar, I'd probably
>write "820 spar" and "820 spar", so I could make my mark after the first
>820 grams were weighed. My triple balance has a hard time holding 1640
>grams at once!
>
>It's just too easy to get distracted, especially when there are a lot of
>white and light colored powders in use at the same time! I hope you get
>your answer about how to get your purple crystals in the blue glaze.
>
>Bonnie
>Bonnie Hellman still on vacation in Ouray, CO, enjoying the low humidity
>and comfortable temperatures
>
>
> >----------------------------Original message----------------------------
> >
> >Hi Clayarters,
> >
> >This question is for Ron Roy or other glaze gurus. I was mixing a 4000 grm
> >batch of Emily Purple (from the Penland book) which is a nice cobalt ^9
> >glaze I use a lot when the phone rang. After I got off the phone I was
> >confused about what I had or had not added to the glaze. I went ahead and
> >finished mixing the glaze the best I could, but ran tests since I didn't
> >trust myself. The glaze fires cobalt blue with purple crystals. I'm doing a
> >slow cooling but the original glaze does not have the light purple crystals.
> > The glaze is as follows:
> >
> >Potash Spar 410
> >Colemanite 120
> >Dolomite 70
> >Talc 150
> >Tenn Ball Clay 50
> >Flint 200
> >
> >Total 1000
> >
> >Blue: 3% Cobalt Carbonate
> > 2% Tin Oxide
> >
> >I was near the Dolomite when I was interupted, but had dumped the chemical
> >and not changed the scale. Could I have doubled the Dolomite or possibly
> >reduced the Talc? Any ideas would be appreciated. I can't remember who
> >says "she learns from her mistakes" but I would sure like to reproduce this
> >one!
> >
> >Nancy in South Carolina where we had 12 inches of rain on Tuesday!
> >
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