Picture of Easy Solar Cooker

Here is an idea for a solar cooker that is easy to build and is versatile.  Solar cookers do not have to be complicated or require expensive hard-to-work with materials.   In fact, the simpler (and cheaper!), the better as far as I’m concerned.   The first ones I built were a variation of the funnel types made with two rectangular reflectors fastened together at one end and spread out at a 45 degree angle to form a wedge.   Each reflector was about 18 inches by 30 inches.  An isosceles triangle, 24 to 30 inches tall was used as the bottom reflector.  The beauty of this type, besides being super simple to build with no complicated angles or folds, is that it is very efficient and works well whether the sun is low (winter) or high (summer) in the sky.  Another positive attribute is that it only has to be adjusted on the horizontal axis, not the vertical like some more complex styles of funnels.  It is also a good style for camping, traveling, etc. because it all folds up flat.  The downsides are that the ends need to be staked down if it’s windy and it requires the use of an oven bag to insulate the cooking vessel from the ambient air.

I have wanted to build a solar cooker that was not susceptible to wind and didn’t require an oven bag for insulation.  I have made a couple of box cookers/ovens, but could never get them to work very well.  It seemed I just couldn’t get them to heat up enough to cook.  However, the other day I was out in my shop and saw an old wood ammo box and thought I would give the box cooker another try.


·         A large wooden box with lid

·         Heavy duty foil

·         Spray adhesive

·         Heavy cardboard

·         Some ¾ inch pine boards

·         A 5/16 inch wood dowel rod

·         A piece of plexiglass or glass to fit the box

Remove these adsRemove these ads by Signing Up

Thank you so much.

Just a quick question. When you put the plexiglass in place, would your cookinh vessel already be inside?
zippetydooda (author)  maydaysmusings1 month ago

Yes, the front is the only opening. Place the pot inside - lay the plexi on top and hold it in place with the little homemade clips.

zippetydooda (author) 1 year ago
Thank you. It does make quite a nice cooker - very durable and it works very good.
avenger221 year ago
I love it. A scouts dream, man.
This is one of the simpler designs I have seen for a solar oven. I like it.