|Monthly Tech-Tip |
These were fired at cone 04. Both were glazed at the same time (with three brush-on coats of Spectrum 742 Dark Red). After the first firing they looked the same. But the one on the right was refired (to repair glaze issues) and it has lightened in color. This glaze is not opacified, its deep color relies on depth of application.
Refiring pottery and porcelain comes with many issues that can ruin ware, knowing about these will help you do it successfully.