vince pitelka on tue 20 feb 01
> Steve...
> I use this technique to read the back pressure in the kiln...
> So you are saying that the back pressure is related to reduction????
> Could you describe the theory more.
> many thanks
Karen -
You can have a reducing flame without back pressure, but you cannot have a
reducing atmosphere without back pressure. The back pressure is essential
in order to ensure that the reduction atmosphere is as uniform as possible
throughout the kiln. The secret is to avoid excessive back pressure and
excessive reduction. I think that Steve is right about potters being able
to judge reduction and back pressure very sensitively by this method (a
smoking stick or newspaper twist held in front of the spyhole), but it is
hard to imagine it could ever give the precision of an oxyprobe.
Best wishes -
- Vince
Vince Pitelka
Appalachian Center for Crafts
Tennessee Technological University
1560 Craft Center Drive, Smithville TN 37166
Home - vpitelka@dtccom.net
615/597-5376
Work - wpitelka@tntech.edu
615/597-6801 ext. 111, fax 615/597-6803
http://www.craftcenter.tntech.edu/
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