CERC Green Solar Oven

Step 7 Assemble the Cooking Chamber - Heat Collector

Lets focus back on the cooking chamber.  Grab some more foil and gently crumple it to obtain a textured surface.  You should not crumple it to the point that holes start to develop.  When you straighten it back out, hold it up to the light to verify that it is not full of holes.  Repeat this step as many times necessary to cover the inside of the box.  From here, tape the protruding foil down. 

You now have to paint the collector black.  You must use a paint which can handle higher temperatures.  Latex paint is not acceptable.  Try to find a matte or flat finish black enamel paint.  You can use a spray paint but be sure to get one without CFC's which can harm the ozone layer.  Also, spray paints will require many thin coats but can produce and easier to apply and more even coating.  Brushes work just as well because we are actually NOT looking for a smooth finish.  In the end, be sure the paint is VERY black since there are many times it can look tinted and will reduce efficiency greatly. 

After the paint is dry, fashion some clips to hold everything together.  Grab your rubber bands and paper clips and connect them in a paperclip-rubber band-paperclip segment.  Depending on the size of your oven, you may need one, two, or three clips per side.  Below, we show an example of one and two clips per size.  On the Cooking chamber, push one end of the paperclip through the cardboard to anchor it.  Place the reflector on the cooking chamber and stretch the rubber and to clip the other paperclip to the edge of the reflector.  Repeat for all sides.