Reid wrote: > The main reason we cannot apply the CS until after > the first firing is that it is necessary to reach at least 700 or > 800C, and preferrably 900C, in order to achieve good strength. In this > way the earthenware becomes hard and strong enough to help insure a > long lifetime. It is a problem that the silver will burn off at a > much lower temperature than 700.
If the silver is literally driven out of the matrix, evaporating, then there may not be much left. What is left may not be in an accessible form. It'd be necessary to try it in various ways to see if that indeed happens. Didn't think about the comparative temperatures. You are attempting to use a lower firing to "set" the silver in place by baking to above the metal's melting point. The kiln is a simple one run on locally available fuel? A reducing is made by choking the air supply, which produces soot, of course. Your main problem is a cosmetic one, so you might consider a cosmetic solution. Find a way to darken the clay so the sooting would not be so obvious? Or find a way to prevent the sooting... Have you asked this question on any pottery lists? > By contrast the use of the very common red clays should make > earthenware purification candles a sustainable option for the kind of > appropriate technology that is suitable for village pottery > production. Excellent project. Novel methods. I wish you well. Mike D. [Mike Devour, Citizen, Patriot, Libertarian] [[email protected] ] [Speaking only for myself... ] -- The silver-list is a moderated forum for discussion of colloidal silver. To join or quit silver-list or silver-digest send an e-mail message to: [email protected] -or- [email protected] with the word subscribe or unsubscribe in the SUBJECT line. To post, address your message to: [email protected] Silver-list archive: http://escribe.com/health/thesilverlist/index.html List maintainer: Mike Devour <[email protected]>
