karen gringhuis on sun 22 apr 07
John -
(Your e mail address doesn't work.)
Make up a test batch of your favorite base & use ALL
FOUR colorants.
Fire up a test piece and have it professionally tested
for chemical leaching.
The ff. is a classic recipe which has been in use a
long time. If you're interested in ways to try
bringing it down to C/6, write me back. The colorant
combo should work w/ other bases. I use it to make
black slip. The Co can give a tiny nice blue line at
the edges.
VC BLACK SATIN MATT C/10 (MgO matt type)
> >
> > Kona F-4 20%
> > Custer 20
> > Dolomite 15
> > Talc 13
> > Whiting 2
> > Ball clay 10
> > Flint 20
> > total 100%
> > Chrome oxide 1.0%
> > Red iron oxide 3.0
> > Mangan. Dioxide 2.0
> > Cobalt OXIDE 3.0
> >
Karen Gringhuis
KG Pottery
Box 607 Alfred NY 14802
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