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Message Subject Last minute tips for parents when the SHTF
Poster Handle Anonymous Coward
Post Content
Essential equipment: Fresnel Lens

Since there's apparent interest in SHTF Cooking and people want to minimize learning the most basic skill of firemaking, here's an essential piece of equipment that is vastly superior to a magnifying lens: a fresnel lens.

This form of lens creates a very intensively hot focal point when the sun's rays are hitting the top of the lens.


They can be purchased as cheaply as $2 US and have their place in sunny climates and take up no room whatsoever but can get scratched or scored.

If placed in a frame, and one has basic carpentry skills, then a long term cooking device can be made which generates considerable heat.




However you can merely cook with it:
 
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