Click here to check out their link for details in the online article.
Using it to mask in an area to paint a Amaco Palladium cone 5-6 glaze over a previously glazed and fired surface.
Three layers of glaze and the edges stayed crisp.
Fired off and it definitely added to the composition of the surface.
Alas, (what a fun word...) a minor, in house, celebration of the lunar eclipse this week.