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Earthenware Clays

9 products

Earthenware Clays

These clays are designed to work well at the typical low-fire temperature range of 06-04. They offer the best options for fit with commercial low-fire glazes. 

  • Artist White Casting Slip

    Standard Ceramics Artist White Casting Slip

    An excellent bright white firing slip that works well with most commercial glazes and underglazes. Contains imported talc. Cone 04 Shrinkage 5% Absorption 17% Resources: Tips and tricks on low fire white slip Glaze Recommendations for Low Fire White Slip and 105 White Clay Safety Data Sheet CAN NOT SHIP VIA UPS OR USPS. MUST SHIP VIA LTL FREIGHT, BRACKER'S DELIVERY, OR PICKED UP AT OUR STORE.  

  • Low Fire White Casting Slip Low Fire White Casting Slip

    Standard Ceramics Low Fire White Casting Slip

    15 in stock

    Standard's Low Fire White casting slip.  Please note this slip has been discontinued by the manufacturer and is being sold while supplies last  Cone 04 Shrinkage 5% Absorption 17% Resources: Tips and tricks on low fire white slip Glaze Recommendations for Low Fire White Slip and 105 White Clay Safety Data Sheet CAN NOT SHIP VIA UPS OR USPS. MUST SHIP VIA LTL FREIGHT, BRACKER'S DELIVERY, OR PICKED UP AT OUR STORE.  

    15 in stock

    $18.00

  • Sale -3% Chalk Rock Chalk Rock

    Kansas Clays, LLC Chalk Rock

    Replacement for White Earthenware. For best glaze results, bisque fire to Cone 01 Talc is a material used in clay bodies that helps to prevent moisture absorption. Its presence in low fire white clays especially prevents crazing of the glazes, this is also true to a lesser degree in mid-fire clays, especially porcelains. The Texas talc mines are no longer selling their talc commercially... DalTile OWNS and OPERATES the Talc mines in Texas [as they have since 2017. Technically, they have owned them for much longer, but there is a very LONG story on which-company-bought-which-one-in-what-year. (C-95, C-98, TDM-95, Pioneer, AmTal.) It is the only remaining, white-burning vein of talc in North America that is being mined. They last sold it to market through the company name Natural Minerals. in 2020, DalTile's parent company (MOHAWK) decided to shut down Natural Minerals, and cease selling talc to EVERYONE. Distributors, manufacturers, and the rest of the industry were informed at that time, and given the opportunity to place final orders. The last shipments went out in Q1 of 2021. The talc mines are still in operation, but DalTile is keeping the talc for its own manufacturing uses. There are other talc mines in the US (Montana), but their talc fires with a noticeable yellow-ish cast. Currently, you cannot make a white clay or slip out of them. There has been *some* testing in glazes, but we do not have any information regarding suitability for a particular glaze. YES this is a struggle...for everyone involved. From the time the announcement was made, Kansas Clay went to work on reformulating all of clay bodies that contain talc. Earthenware white was the biggest struggle because 42% of the clay body was talc. We believe that the Kansas Clay chalk rock clay will work well in most applications where Earthenware White was previously used. They also found that for the BEST glaze fit, increasing your bisque temperature from Cone 04 to Cone 01 was extremely beneficial with minimal increase in time or cost of that firing. In some cases this is not necessary, for instance if you use underglazes and a clear glaze (we found Spectrum 700 to work the best with Mayco clears as a close second) the increased bisque temperature is not necessary. Most Mayco Stroke and coats also seemed to perform well with no crazing observed on 04 bisque. Kansas Clay is continuing to test this body and relies on customer feedback to make any necessary tweaks for better performance. Feel free to use their feedback from to share your experiences (click here)! Flint Hills clays have been evaluated by a nationally certified toxicologist, and have been found to be in compliance with ASTM C-1023 and D-4236, and to not contain any material in sufficient quantity to be toxic or to constitute a chronic health hazard when used responsibly.

    $19.50 - $34.00

  • Sale -3% Birch Bark

    Kansas Clays, LLC Birch Bark

    White, Low Fire, Talc-Free Sculpture clay body. We developed this body as a replacement for our Earthenware White Plus. We also recommend this as an alternative to the Flint Hills Raku clay (when used for sculpture or handbuilding purposes). It contains both fine grog and sand, so it's ideal for handbuilding, but can be thrown also. It's just a tad off-white in color at 04. For best glaze results and a whiter color, bisque fire a bit hotter, to Cone 01. The body is still porous enough to accept low-fire glazes and the increase in bisque temperature will not be noticeable in energy costs or element life. Flint Hills clays have been evaluated by a nationally certified toxicologist, and have been found to be in compliance with ASTM C-1023 and D-4236, and to not contain any material in sufficient quantity to be toxic or to constitute a chronic health hazard when used responsibly.

    $19.50 - $34.00

  • Sale -4% Terra Cotta Terra Cotta

    Kansas Clays, LLC Terra Cotta

    9 in stock

    A low fire red clay with about 18% grog (30 mesh flint grog) that fires to a light red-orange color at cone 06 to 05, and a richer, deeper red color when fired hotter, up to about a cone 2. Flint Hills clays have been evaluated by a nationally certified toxicologist, and have been found to be in compliance with ASTM C-1023 and D-4236, and to not contain any material in sufficient quantity to be toxic or to constitute a chronic health hazard when used responsibly.

    9 in stock

    $20.50 - $45.30

  • Sale -4% Earthenware Red Earthenware Red

    Kansas Clays, LLC Earthenware Red

    A low fire red clay that fires to a light red-orange color at cone 06 to 05, and a richer, deeper red color when fired hotter, up to about a cone 2. Red Earthenware has been tested up to Cone 5/6 with good results, however, testing continues to be recommended as your results may vary.

    $20.50 - $45.30

  • Sale -4% Earthenware Red Plus Earthenware Red Plus

    Kansas Clays, LLC Earthenware Red Plus

    2 in stock

    A low fire red clay with approximately 10% fine mesh silica sand and approximately 5% fine mesh grog that fires to a light red-orange color at cone 06 to 05, and a richer, deeper red color when fired hotter, up to about a cone 2. During the summer of 2020, we completed a comprehensive test of our clay bodies. For each clay body, we tested 6 flat bars, which were rolled out on a slabroller. We ALSO tested vertical shrinkage of a thrown cylinder (6 sections, each with their own test) beginning weights in grams were recorded the lines and weights were measured & recorded when bone dry The samples were fired to Cone 04 lines and weights were measured & recorded again The flat tiles were then soaked in hot water for 1 1/2 hours, then weighed again Math magic was then done to calculate the average shrinkage wet-dry and average shrinkage overall for both flat and thrown tests, and the average water absorption was calculated based on the flat bars. We also figured the "LOI" (Loss on Ignition) by computing the fired weight against the bone dry weight. This tells us what percent of organics burn off in the firing. Flint Hills clays have been evaluated by a nationally certified toxicologist, and have been found to be in compliance with ASTM C-1023 and D-4236, and to not contain any material in sufficient quantity to be toxic or to constitute a chronic health hazard when used responsibly. RECOMMENDED VIDEO: Red Clay Comparison by Bracker's

    2 in stock

    $20.50 - $36.00

  • Sale -5% Terra Blanc Terra Blanc

    Kansas Clays, LLC Terra Blanc

    A non-talc based low-fire white clay that is easier to throw than talc-based bodies, especially for beginners. Fires to a creamy white at Cone 04. Low shrinkage and great glaze fit. During the summer of 2020, we completed a comprehensive test of our clay bodies. For each clay body, we tested 6 flat bars, which were rolled out on a slabroller. We ALSO tested vertical shrinkage of a thrown cylinder (6 sections, each with their own test) beginning weights in grams were recorded the lines and weights were measured & recorded when bone dry The samples were fired to Cone 04 lines and weights were measured & recorded again The flat tiles were then soaked in hot water for 1 1/2 hours, then weighed again Math magic was then done to calculate the average shrinkage wet-dry and average shrinkage overall for both flat and thrown tests, and the average water absorption was calculated based on the flat bars. We also figured the "LOI" (Loss on Ignition) by computing the fired weight against the bone dry weight. This tells us what percent of organics burn off in the firing. Flint Hills clays have been evaluated by a nationally certified toxicologist, and have been found to be in compliance with ASTM C-1023 and D-4236, and to not contain any material in sufficient quantity to be toxic or to constitute a chronic health hazard when used responsibly. RECOMMENDED VIDEO: Terra Blanc by Bracker's

    $22.50 - $48.50

  • Terra Cotta Slip

    Standard Ceramics Terra Cotta Slip

    7 in stock

    C/06-04 A classic terracotta color at C/04. Excellent casting slip. Can be used for all types of molds. Very good for functional ware. Cone 04 Average Shrinkage 6.0% Absorption 5.0%

    7 in stock

    $27.56

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