Cone 10 Ravenscrag Slip Glazes

Ravenscrag by itself fires to an excellent cone 10 glaze, thus it makes a great base.

Test for leaching by placing your glaze sample in vinegar over night (or for a few days) to see if the color or surface has changed at all (if it leaches it may not be food safe depending on what materials are in the recipe). Also test for crazing by heating glaze samples to around 350F and then submerging them into room temperature water (do this 2 to 3 times).

Ravenscrag Slip by itself as a glaze Ravenscrag all by itself makes a great cone 10 glaze
A buff stoneware vase with 100% Ravenscrag Slip glaze on Laguna B-Mix clay	Recipe Ravenscrag Slip 100.00 100.00	Notes Ravenscrag Slip is a revolutionary glaze material for stoneware. At cone 10R it can be used as 100% of the glaze mix and it produces a beautiful silky surface. Many classic cone 10 recipes can be made by simple additions. For example: Celadon: Add 3-5% iron Brown crystal: Add 6-8% iron Tenmoku: Add 9-11% iron Kaki: Add 11-13% iron White: Add 4-10% Zircopax Other colorants: the possibilities are endless. Ravenscrag has great slurry and application properties, and you can put multiple layers of glaze on the ware. The bowl samples show here have 100% Ravenscrag on the left, 10% whiting is added on the right.

Ravenscrag Slip plus 10 Whiting Cone 10 Reduction Glaze
Ravenscrag and plus whiting on H440 Ravenscrag and plus whiting on H550 Ravenscrag and plus whiting on H570	Recipe Ravenscrag Slip 90.00 Whiting 10.00 100.00	Notes 10% whiting addition is shown on right side of bowls.

Ravenscrag Slip plus 10% dolomite Plainsman Cone 10R Ravenscrag Slip Glaze
Ravenscrag plus dolomite on H440 Ravenscrag plus dolomite on H550 Ravenscrag plus dolomite on H570	Recipe Ravenscrag Slip 90.00 Dolomite 10.00 Iron Oxide Red 1.50 101.50	Notes The sample bowls shown here are the base three-part glaze on the left and on the right 1.5% more iron, 4% rutile and 2% cobalt carbonate have been added.

Ravenscrag Slip plus 15% talc Cone 10 Reduction glaze
Ravenscrag plus talc on H440 Ravenscrag plus talc on H550 Ravenscrag plus talc on H570	Recipe Ravenscrag Slip 85.00 Talc 15.00 100.00	Notes Sample bowls show the Ravenscrag/Talc mix, on the right 1% cobalt oxide and 1% copper oxide have been added.