Judy Musicant on thu 17 jun 99
Paul Lewing responded to the orginal question by saying you should add an
opacifier in increments to the translucent glaze until you achieve what you
are want. Paul, or any others out there - if you are adding an ingredient
to a 100% batch, should you be reducing another ingredient? Thanks.
Judy
Paul Lewing on fri 18 jun 99
Judy Musicant wrote:
>
> ----------------------------Original message----------------------------
> Paul Lewing responded to the orginal question by saying you should add an
> opacifier in increments to the translucent glaze until you achieve what you
> are want. Paul, or any others out there - if you are adding an ingredient
> to a 100% batch, should you be reducing another ingredient? Thanks.
>
> Judy
Hi, Judy,
There is no need to adjust the other ingredients so that the recipe adds
up to 100.
There is a tradition, or convention, of writing a glaze recipe so that
the ingredients for the base glaze add up to 100, and the colorants and
opacifiers are listed separately. This is so if you have, say, a glaze
that has 10% colorants and one that has 2% colorants, you can accurately
compare the bases.
In practical use, however, it really makes no difference, especially
when you're just making a small test. In terms of using it, there is
really no difference between working with a 100 g batch and working
with a 110 g batch.
Happy testing,
Paul Lewing, Seattle
Dr.Tom Roess on mon 21 jun 99
------------------
Hi Judy,
If you add more ingredients to a 100=25 glaze, you can convert it back to
100=25 without reducing any other ingredients. Say you add 10=25 new
ingredient. Your formula now adds up to 110=25. Divide each number in the
original formula by 110 to get the new =25. For instance, 20 divided by 110
=3D 18, the new percentage of that ingredient.. Or, 50 divided by 110 =3D =
45.
The reason to have formulas add up to 100 is to be able to compare
percentages of ingredients between one glaze and another or to compare with
limits. Some ingredients are not included in the 100=25.. It depends on who
you learned from.
Lou in Snowmass
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