Alisa and Claus Clausen on sun 19 mar 00
------------------
Dear Clayart,
I can only use receipes to mix a glaze from.
As a American in an adopted country, I very much want to see receipes =
because
1. I recognize the listed brand or specific name materials.
2. It is a great learning experience to source the same generic materials =
here,
and find out what matierials available here work in the receipe. =
Sometimes
I
can get exactly the same materials, such as Gerstely Borate (for now), =
but
other times
I have to try different feldspars, etc.
3. It is a vocabulary expander to learn the translations of many materials.
Basically, it gives me a chance to standardize receipes I want to use with
commonly
available materials in Denmark.
The formulae are very interesting to me. But for me unfortunately,
it like reading phenetically, but not making sense of the sentence.
The source of material is very important to know as I think David H.writes.
Thanks for some good receipes I am testing out. Mareks transparent cone
6 is getting colored next week with anything I can think of.
Best regards,
Alisa in Denmark
-----Oprindelig meddelelse-----
Fra: David Hewitt =3Cdavid=40dhpot.demon.co.uk=3E
Til: CLAYART=40LSV.UKY.EDU =3CCLAYART=40LSV.UKY.EDU=3E
Dato: 17. marts 2000 17:58
Emne: Re: Recipes or Formulae
----------------------------Original message----------------------------
Martin,
I share your view that it is very desirable to have an analysis with a
recipe, provided that it is based on the analysis of the raw materials
used by the originator in that recipe. This certainly does help in the
'transporting' of glaze recipes.
It is, of course, also very important to have the recipe. An analysis
alone is not enough. It is very important to know the source of the
individual oxides in an analysis that the originator of the recipe has
used as this can significantly affect the finished glaze. Which feldspar
do you select? Do you source the MgO from dolomite, magnesium carbonate
or talc? Which frit was used? It is also important to know the type of
clay body used by the originator, and this is also not often included.
'Transporting' glaze recipes is not easy and I have tried to cover many
of the potential problem areas by an article on my web site under this
heading.
David
In message , martin howard =3Cmartin=40webbscottage.co.uk=3E writes
=3E----------------------------Original message----------------------------
=3EWe usually receive recipes in postings.
=3E
=3EBut for those of us away from the USA, formulae are usually the most =
useful.
=3EWe do not necessarily have access or wish to use the raw materials =
mentioned
=3Ein the recipes, wonderful as they may be.
=3EWe prefer to use our raw materials, because we know them, and can then =
make
=3Euse of unity formulae more simply than recipes.
=3E
=3EDo I speak for others in the UK and elsewhere with access to glaze =
software?
=3E
=3EMartin Howard
=3EWebb's Cottage Pottery
=3EWoolpits Road
=3EGreat Saling
=3EBRAINTREE
=3EEssex CM7 5DZ
=3E01371 850 423
=3Emartin=40webbscottage.co.uk
=3Ewww.webbscottage.co.uk Should be ready for 2000 :-) or 2001
=3E
--
David Hewitt =3Cdavid=40dhpot.demon.co.uk=3E
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