I was fortunate to take a Steven Hill workshop in 2011. This totally changed the way that I glaze and look at surface decoration. ( spraying and single firing)
This You Tube video explains his process:
Steven's complete video with recipes, where to purchase spray cups, etc. is available online. This would make a great Christmas gift for your favorite potter. http://ceramicartsdaily.org/bookstore/the-surface-techniques-of-steven-hill/ ( download)
This is our Steven Hill serving piece.....
Glazes are cone 6, multiple layers sprayed, single fired in an electric kiln with a programmed ramp and cool down.
He provides his glaze recipes and firing schedule on the video.