Most anyone can figure out how to mix gas and air to produce heat in a kiln. What takes a little more expertise is firing a kiln with efficiency, regardless of what type of firing is being done. In today’s excerpt from Gas Kiln Designs and Firing, Hal Frenzel explains how understanding fuel combustion will help you make the most of your gas kiln.
In today’s post, crystalline potter Diane Creber explains the basics of growing crystals and how crystalline glaze potters have been recently experimenting using reduction to enhance the pre-formed crystals in their glazes. Plus she shares a couple of great crystalline glaze recipes and a crystalline firing program for a digital controller.
The Irresistible Surface: Layering Glazes and Trapping Carbon to Create Loosely Geometric Repeating Patterns
Peter Karner developed his surface decoration through years of trial and error and he continues to try new things so that his surfaces continue to evolve. In today’s post, Peter explains how intuition combined with experimentation helped him perfect his beautiful glaze surfaces. Plus he details how he uses wax resist and layers of five different glazes to develop his gorgeous glaze patterning.
Today, in an excerpt from her new book Low Firing and Burnishing, Sumi Von Dassow explains how potter Edgeworth Barnes fires his pottery in aluminum foil saggars with great results.
Significant cost savings can be realized by potters without access to a landfill through a variety of strategies and fuel choices. These can be divided into categories and discussed in terms of benefits and difficulties. Solid fuels are difficult, liquid fuels are moderate, and gases are easier.
Initially, I placed a 30-gallon plastic barrel outside one such diner that had agreed to save the used oil for me. My plan was to swap out the barrel every five weeks (the owner predicted it would take that long to fill the barrel) and replace it with an empty 30-gallon barrel. I learned two facts immediately: First, I couldn’t lift the full barrel of oil onto the back of my pick-up truck. Secondly, used, hot oil will melt plastic barrels.
To achieve complete combustion, the exact proportions of fuel and oxygen are required with nothing remaining. In a gas kiln firing this is often difficult to attain because of the many variables in fuel and oxygen (which is derived from the air) and the equipment used to mix the two.
In the May 2007 issue of ,
John Britt contributed an essay to the Comment column, which suggests
simple changes that potters can make in their studio habits to help
make their practice more Earth friendly. I am excerpting a couple of
highlights from his essay here.
This week, we will take a look at how Carcia uses terra sigillata, vegetation, oxides and salts to make her vividly colored work.