Trimming happens when the pot becomes leather hard, but so does the application of slip and glaze. Mark goes over the foot with water after it is trimmed, but he is careful to use a rib to smooth the surface and remove excess water. Even so, the pot should dry before the application of slip.
Leathery Iron Slip
Silica 30
Ball Clay 30
EPK Kaolin 20
Nepheline Syenite 30
Red Iron Oxide 8
Bentonite 2
Mark applies this slip for use in salt, soda or wood firing. He recommends that, if you are firing in gas reduction, you may want to use an ash glaze or a clear glaze over top of it. If you're firing in oxidation, try it out and let us know how it looks.
Since the pot is leatherhard, it will soak up water from the slip and become softer, so it needs to be allowed to dry out and stiffen again before the application of glaze.
Shino Glaze
Soda Feldspar 15
Spodumene 12
EPK Kaolin 3
Nepheline Syenite 50
Ball Clay 17
Soda Ash 3
Bentonite 2
This is a cone 10 glaze, which Mark uses on the interior of the cup. The outside slip will get ash, soda or salt. It will re-saturate the clay like the slip did, so if you're applying glaze to both the inside and outside, be sure the pot is thick enough to absorb that much water without getting floppy---or wait between applications.
If you missed part one of this video,
click here to check it out.