thats a lot of work ... might be easier to build a microwave oven with my multi tool and just nuke some water to a roaring boil <img src="/images/graemlins/smile.gif" alt="" />

That makes a lot of sense and also explains why it is not commonly used (at least not in the states).

I will have to make another one up to get some pics. It is an 'as needed' unit, after all.

Rena
SurvivalGene(.com)

I'd really like to see a pic too. <img src="/images/graemlins/grin.gif" alt="" />

Some links to "practices" for development countries
http://solarcooking.org/
http://solarcooking.org/metcalf.htm
http://solarcooking.org/soda-bottle-pasteurizer.htm

Other projects
http://www.cdc.gov/safewater/
http://ceemeng.mit.edu/~water/

Ceramic water filters
http://ceemeng.mit.edu/~water/ceramic_tech.htm
http://www.potpaz.org/pfpfilters.htm