iandol on fri 7 jun 02
Dear Michele Williams and Eric Suchman
I suppose they are using "Eosin" as a metaphor for the colour produced =
by this low temperature process (which was also exploited by the =
Sunderland Potteries of the same era) because of the similarity with the =
colour of the organic biological stain. I recall that eosin is used to =
stain plant tissue. It is red but in dilute solutions becomes pink with =
a metallic yellow reflection when allowed to dry on a glass slide from =
an alcoholic solution.
I have not got as far as using Copper yet, but with Silver compounds of =
one sort and another I get the yellow stain but also vivid metallic =
blue, violet and magenta. Firing temperature will depend on the Glass =
transition temperature of the glaze being used. This may be lower than =
you might expect. Cone 04 would be far too high for Silver which would =
diffuse into the glaze to give a drab dirty yellow stain.
The best sources of information on this topic will be Kingery and =
Vandiver or Caiger-Smith.
Best regards.
Ivor Lewis
| |
|
