Do you like marshmallows cooked over a campfire? What if you don’t have a campfire, though? We’ll solve that problem by building our own food roaster – you can roast hot dogs, marshmallows, anything you want. And it’s battery-free, as this device is powered by the sun.
NOTE: This roaster is powerful enough to start fires! Use with adult supervision and a fire extinguisher handy.
If you’re roasting marshmallows, remember that they are white – the most reflective color you can get. If you coat your marshmallows with something darker (chocolate, perhaps?), your marshmallow will absorb the incoming light instead of reflecting it.
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The hot melt glue should be safe from melting, because the foil will protect it from most of the heat.
wouldn’t the hot glue melt?
Fresnel lens is a page magnifier – I got mine from a local pharmacy-type store or $1 type store – they are really inexpensive.
Super cool!
Where could you get a Fresnel lens?
Is there anything else we could use to make our Marshmallow (food) Roaster?