Registered: 11/14/03
Posts: 1224
Loc: Milwaukee, WI USA
Brian:
For more heat, you make a collapsible cardboard solar oven painted flat heat resistant black in its chamber with reflective foil faced cardboard sides angled to direct more sunlight into the chamber where the bottle sits.
WARNING & DISCLAIMER:
SELECT AND USE OUTDOORS AND SURVIVAL EQUIPMENT, SUPPLIES AND TECHNIQUES AT YOUR OWN RISK. Information posted
on this forum is not reviewed for accuracy and may not be reliable, use at your own risk. Please
review the full WARNING & DISCLAIMER about information on this
site.