Pete Pinell's White Slip
10 Nepheline Syenite
+10 Frit 3124
(You can also add a few drops of sodium silicate - a deflocculant that helps reduce viscosity and makes the slip easier to apply with a slip bottle.)
There are a variety of slip trailing bottles out there in many shapes and sizes. You'll want to experiment with a few until you find the style that you enjoy most. Some things to think about 1) the size of the tip opening can have an effect on line thickness it creates 2) how hard is the plastic? You're could be squeezing for awhile, so you want a bottle that's softer and easier to work with. 3) how much slip do you want it to hold?
Ron has a great post here on how to construct your very own slip trailer.Try drawing a practice line first to check thickness and to make sure the bottle isn't clogged. A sewing needle can be used to unclog the tip if needed.
Squeeze and draw away! It's a lot like decorating a cake. I like to wait until the clay is leather hard because the clay forms are easier to hold and work with at this stage.
A few glaze fired sample of how glazes will "break" and pool over the slip giving the surface added depth and dimension.If anyone's interested, I'd be happy to share the above 2 recipes. Just let me know. Hope you're able to do something creative today!
Enjoy! I'm off to the studio!
PS - More on the materials and process I use can be found here.