india ink or what else ?
I have been working with crackle glazes for a long time but never on fonctional pieces. I have always coloured the cracks with India ink but I know it is not very good for your health. I have tried iron oxyde but it only works on very pale glazes. I have also tried cuttlefish ink but it does not work. Any idea as to what I could use to obtain black lines and not poison my customers ? I would be grateful if someone can help me.
Sharing a "secret" here that I use........ I use ball milled lead-free china paints and re-fire them.
best,
.......................john
EDIT: Oops... just saw Joanna's posting. Duplicate information. But I take the china paint and ball mill it so that it has an even finer particle size than the originals. Helps it penetrate into the tiny little craze lines.