SuperDave
Member
Here is a link to an article, as well as a picture of a Refrigerator Kiln. (The holes can be in the upper and lower sides as well as the top or bottom.)
Not that difficult to make and really cheap.
http://jimsyvertsen.com/australianburlsdotcom/Tips4.htm
Not that difficult to make and really cheap.
http://jimsyvertsen.com/australianburlsdotcom/Tips4.htm