Bill Merrill on thu 29 dec 11
The following engobe is one that was given to me by Pete Voulkos over 40
years ago. It is a cone 10 slip for green ware or it can be used on
bisque ware. It can't be trailed heavily like a wet application slip or
it will crack off. I add tin to the slip , but is white without the
tin. =3D20
Dave Shaner used this engobe to decorate low bowl or platter forms that
were dry. He would wax resist a pattern and put the engobe over the
piece. After bisque firing he would then glaze the piece.
Dave also used the engobe over glazes, but added 75% iron to the engobe
and would use it as a wash (use thin) over his glazes. He would glaze a
form, do a wax resist pattern over the glaze and then use the thin iron
wash over the glaze.
Voulkos cone 10 dry/bisque engobe
20 EPK=3D20
20 OM4
25 Neph SY
30 Flint
5 Borax
For a blue add 2% cobalt oxide
For a green add 3% chrome
A great white glaze that works extremely well on interiors of pots as
well as the exterior is Eustes liner glaze It also is a cone 9-10 glaze.
If you leave out the flint it is an red-organish white dolomite mat.
Ken Ferguson used this version of Eustes during his days at the Bray
Foundation. =3D20
The liner version takes cobalt, iron and other colorant combinations
very well.
Eustes Liner Cone 10 reduction
3470 Custer
1960 Dolomite
310 Whiting
2360 EPK
1890 Flint
Bill Merrill
=3D20
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