David Hendley on fri 11 jul 03
Ranger Shale clay is mined close to Ranger, in West Texas. It's
different from Redart clay. It makes a good terra cotta body with
just the addition of grog.
To me, Ranger feels much more coarse than Redart. It feels like fireclay,
while Redart feels like ball clay. If I had both clays readily available,
I would prefer making my claybody using both of them. It's always
good to have a variety of clays in a claybody.
For decorating slips, I would choose Redart because of its great
smooth brush-ability. Another big plus for Redart is its pretty red
color. Ranger Shale is a boring drab grey color before firing.
David Hendley
david@farmpots.com
http://www.farmpots.com
----- Original Message -----
> Redart is an earthenware clay, very short workability for use
> in a cone 04 body, 10% shrinkage @ cone 04, 7.1% absorption
> @ cone 04, beautiful dark brick red fired color in oxidation (@ cone 04.)
> There is a clay that comes through Trinity Ceramics in Dallas
> called Ranger Red that can also be obtained through Bracker's in
> Lawrence Kansas. If you're looking to make up an earthenware body
> for throwing, Ranger Red is a much better choice than Redart because
> it has good plasticity, 13% shrinkage @ cone 04 and 6.4% absorption
> in oxidation @ cone 04, also a beautiful even darker red fired color than
> Redart. So the particulars are about the same but the clay is nicely
plastic
> and has a wonderful dense feel like Goldart or Foundry Hill Creme or
> Hawthorn Bond.
>
> David Beumee
> Earth Alchemy Pottery
> Lafayette, CO
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