Dale Neese on mon 20 aug 12
Dina,
The longer the glaze containing unwashed wood ash sits the organic
particulates began to ferment giving off that smell you discovered. Not all
organic wood particles are completely burned away and remain in the wood
ash. And soon maybe the glaze itself has deflocculated to the point that i=
t
is unusable. Fired results do not have the same glaze characteristics as
when first freshly mixed. Other changes within the wood ash as an
ingredient begin to occur as alkali break down even further into solution.
You may be able to "cure" the glaze "smell" with an addition of a bleach bu=
t
the glaze will continue to " change" with time. It is best to only mix wood
ash glazes in small volumes and remix as needed.
Use caution handling wood ash glazes as they are caustic to the skin and
injurious to the eyes.
Dale Tex
"across the Alley from The Alamo"
Helotes, Texas USA
www.daleneese.com
Richard Aerni on mon 20 aug 12
All you need to do to keep your ash glazes from flocculating (becoming =3D
pudding-like) is to add, say, a tablespoon or two of Darvan 7 to a 2000 =3D
gram batch and it will keep its dry glaze/water ratio and workability =3D
for a long long time. =3D20
Best,
Richard Aerni
www.richardaerni.com
Dina,
The longer the glaze containing unwashed wood ash sits the organic
particulates began to ferment giving off that smell you discovered. Not =3D
all
organic wood particles are completely burned away and remain in the wood
ash. And soon maybe the glaze itself has deflocculated to the point that =
=3D
it
is unusable. Fired results do not have the same glaze characteristics as
when first freshly mixed. Other changes within the wood ash as an
ingredient begin to occur as alkali break down even further into =3D
solution.
You may be able to "cure" the glaze "smell" with an addition of a bleach =
=3D
but
the glaze will continue to " change" with time. It is best to only mix =3D
wood
ash glazes in small volumes and remix as needed.
Use caution handling wood ash glazes as they are caustic to the skin and
injurious to the eyes.
Dale Tex
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