Tag: slip

Telluride via Moab

Jeepster parked next to a clay bank with Mount Telluride in the background.
Jeepster parked next to a clay bank with Mount Telluride in the background.

 

 Back in the studio after a great trip over to Telluride, CO via Moab, UT. You better believe I scooped up some of this clay, ball-milled it, and made a slip. I also packed the jeep with a load of rocks and shit.  More on that as the story develops!

 

Red Siltstone and Clay, Telluride, CO
Red Siltstone and Clay, Telluride, CO
The San Juan Rocky Mountains.
The San Juan Rocky Mountains.
Moab Red Rocks
Moab Red Rocks

Cone 10 Greenware Slips (Engobes)

Here’s the newest round of slips for leather hard/stiff application.  All but #7 will work for bone dry application. Not tested (yet) for bisque application.  Fired to cone 10 flat in a hard reduction.  Left side is super thick, right side is thinner.  Clay body is a Hawthorn/Goldart/OM4  stoneware – nothing fancy.

c10 Engobes
C10 Engobe Recipes
C10 Engobe Tiles
C10 Engobe Tiles

#1 Greenware Slip: Grolleg Kaolin 40, OM4 Ball Clay 10, Custer 25, Silica 25
#2 Greenware Slip v.1: EPK 25, Grolleg 25, OM4 Ball Clay 10, Custer 25 Silica 25
#3 Bringle Slip: EPK 20, OM4 20, Neph. Sye. 25, Silica 30
#4 BS v.1: Grolleg 25, OM4 25, Neph. Sye. 25, Silica 25
#5 BS v.2: Grolleg 30, OM4 10, Neph Sye 20, Silica 20
#6 Coleman Clay: EPK 50, Silica 25, Custer 25, Frit 3110 5
#7 CC v.1: Grolleg 50, Silica 25, Custer 25, Frit 3110 5
#8 Porcelain Slip: Grolleg 30, OM4 8, Custer 30, Silica 30, Bentonite 2

Pete's Clear
Glazed C10 Engobes

The light is cheating these a little bit. #1,2, and 8 seem to be the whitest, with not much differentiating them. #1 seems to promote the best celadon blues, although timing is critical, because it cracked when applied to a bone dry tile.  #2 seems to be a perfect middle ground in terms of versatility, cost, and whiteness. In my experience, the difference between a 50/50 grolleg/epk and a 100% grolleg clay body is negligible in cone 10 reduction.  The case could be made that it really matters in oxidation – which is just now bringing to mind the need to test these in c6 oxidation.

My picks? For Whiteness:

#2__Greenware Slip___

EPK 25, Grolleg 25, OM4 10, Custer 25, Silica 25, 45cc Water, 5cc Darvan #7,

For Celadon Blue:

#8__Porcelain Slip___

Grolleg 30, OM4 8, Custer 30, Silica 30, Bentonite 2, 50cc Water, 5cc Darvan #7