search  current discussion  categories  techniques - misc 

defloculating bright sky blue

updated thu 4 aug 05

 

Leesh on tue 2 aug 05


or is it "floculating?" I'm confused.

I'm still pretty new to mixing my own glazes and haven't had any real=20
problems with glaze settling until recently. The Bright Sky Blue glaze from=
=20
Ron and John's book settles out pretty quickly into a hard layer on the=20
bottom that is difficult to mix. What is the best way to fix this glaze so=
=20
it stays in suspension better? Epsom salts or bentonite? How much should I=
=20
use?
Leesh

Ron Roy on wed 3 aug 05


Hi Leesh,

I'm confused as well - that glaze should not settle out - it has 20% EPK
and nothing in that would leach sodium ions - unless your water is very
acid - if that is the case I would recommend using distilled or DI water.

If your house water is softened then that might so it - use purified water then.

The glaze may have too much water. I recommend cone 04 bisqueing and one of
the reasons is - you can keep your glaze slop thicker and it will stay
suspended better.

I can reformulate with some ball clay and bentonite if you like - that will
help - if not then Epsom salts will do it - best not to add solubles till
you have tried the other.

Let me know what ball clay you have or can get.

RR



>or is it "floculating?" I'm confused.
>
>I'm still pretty new to mixing my own glazes and haven't had any real
>problems with glaze settling until recently. The Bright Sky Blue glaze from
>Ron and John's book settles out pretty quickly into a hard layer on the
>bottom that is difficult to mix. What is the best way to fix this glaze so
>it stays in suspension better? Epsom salts or bentonite? How much should I
>use?
>Leesh


Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Phone: 613-475-9544
Fax: 613-475-3513