Yes and No. A Cone 5-6 porcelain will never be as bright or semi-translucent as a Cone 10 Porcelain because less vitrification happens at lower temperatures. We do however sell a variety of Mid-fire porcelains that range in color from grey to different temperatures of...Cone 5-6 standard, light tone clay: Flint Hills Buff Cone 04-05 white clay body: Earthenware White Something new and exiting (Cone 5-6): Peppered Wheat A popular, beautiful Cone 5-6 clay: 5/6 BlackMaybe! Brackers has recently been making over and under fired samples of many of our clays. Below is a list of Flint Hills clays we have tested and what range we were able to take them to so far. Terra Blanc – Works at Cone 04 to Cone 5 (Low and Mid-Fire) Raku – Works...Both! The slip which Bracker’s manufactures in-house is sold in liquid form, however, we also sell wet and dry slips from other manufacturers. Browse our selection of slips here.Yes. Please email us your recipe and we will figure a price for you. The minimum quantity is usually around 1000# When we calculate your price, we will also figure your recipe for a full batch in our mixer and give you an estimated output.