Description: HPM-20 is a micro-fine ground version of Volclay 325 bentonite. The extra grinding triples the price, thus this material is not commonly employed in ceramics (it is used as a suspending agent, viscosifier, binder, plasticizer and emulsion stabilizer). However, typical ground bentonites, like Volcay 325, can have more than 2% residue on the 200 mesh screen, this poses the possibility of fired specks in porcelain. The exceedingly fine HPM-20 largely removes that possibility. As a testament of how hard bentonite can be to grind, their data sheet still shows 1% passing 325 mesh. Also, although this material fires brown, even chocolate brown at higher temperatures, because it is extremely plastic little is required in the recipe. For example, if 2% is used it will add 0.1% to the overall iron content of the body, not usually enough to notice a fired color impact. ........................................................................................................................................................................ This is available for local pickup in 50 pound bags Testing Policy: Testing of raw materials should be an integral part of any process including ceramic or glass making / manufacturing. Upon receipt of any new material, we strongly recommend that you test the material. "Paul Brown Studio Arts and Supplies" . has no control over either the variations that may occur in the natural materials or their application. All products are supplied as is from the manufacturer. No additional processing or technical support is supplied. Therefore, our products are sold with the understanding that the user is solely responsible for determining suitability for any purpose and the results obtained. There are no warranties expressed or implied, regarding the user’s finished product or results. ....................................................................................................................................................................................................................................... Return Policy: NO RETURNS on THIS ITEM
Price: 18.5 USD
Location: Bethel, Ohio
End Time: 2024-09-11T15:47:09.000Z
Shipping Cost: 0 USD
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All returns accepted: ReturnsNotAccepted
MPN: Does Not Apply
Brand: Unbranded
