|Monthly Tech-Tip |
Alternate Names: Plainsman M2
Description: Medium temperature deep red burning stoneware
M2 is a red burning low to medium temperature stoneware clay. It can be used as-is for many applications requiring deep natural fired color. It has about the right plasticity for plastic machine forming (slightly less than for hand modelling). It burns to an attractive dark red at cone 3-4 and by cone 6 it turns dark brown. At cone 2 it fires to a warm red progressing down to a typical terra cotta color at cone 06-04. M2 is quite similar to Redart but it is more plastic.
See the data sheet and PlainsmanClays.com (link below) for more information on properties.
Plainsman M2 (left) vs. Redart (right). These bars are fired cone 04, 02, 2, 3, 4 (top to bottom). Fired color is almost identical. M2 has a little more soluble salts (however M2 has no chemical additions to precipitate them, it is ground as the pure mined material). M2 is more plastic (although still not as plastic as a typical pottery clay). However, Redart will make a good casting slip while M2 does not respond to deflocculants.
M2 Data Sheet
Clays that are not kaolins, ball clays or bentonites. For example, stoneware clays are mixtures of all of the above plus quartz, feldspar, mica and other minerals. There are also many clays that have high plasticity like bentonite but are much different mineralogically.
Plainsman Red Fireclay
Saint Rose Red
|By Tony Hansen|
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