Betcha’d never expect to hear me say that. But at least I’ve finally found a meaningful way to say ‘Kill Your TV’.
It turns out that rear-projection tv’s contain a most useful item: the Fresnel Lens. It is a huge magnifying lens (the size of your TV screen), and with it you can: desalinate water, distill water (and therefore liquor), drive a steam engine, cook food (with the beam alone), light fires (almost instantly), melt glass (and aluminum cans), and more.
During my researches I stumbled across this site: Green Power Science. He has tons of Youtube videos showing experiments with all sorts of renewable type technologies, most of which using fresnel lenses. But what he doesnt tell you is where he is getting them: big screen tv’s. You could say that I have a knack for technology, so when I got a good look at one he had listed in his Ebay store, I immediately recognized his source.
Its as simple as this: remove the frame assembly from the front of the tv, then remove the screen plexi from either the frame or the tv cabinet (whichever its mounted to), and then peel the gray corrugated outer (normally visible) layer away from the inner Fresnel Lens layer. This can be done to virtually any tv with the following tools: Large Flathead Screwdriver, Battery Operated Drill with Phillips and 1/4″ Nutdriver Bits. A couple rare tv’s required getting nasty with a hammer.
The larger the screen the more power it can handle, but there are some catches. There are 2 types of lens, and 2 grades of materials used to make them. The best lenses (especially for showing off) are “Spot”, with the second rate being “Line”. Spot’s project the entire beam into a round shape of an inch or 2. Line’s project a line shape that is about 4-6″, thus spreading out the power zone and weakening the observable results. Theoretically the same amount of power is present, although I haven’t personally had time to do any experiments with time trials of cooking or whatever.
Next we have grades. The best is made from Acrylic, and the low grade is made from Vinyl. Acrylic are stiff, crystal clear, and almost a 1/4″ thick. Vinyl are flimsy floppy, cloudy looking, and sometimes even less than 1/8″ thin. In the picture above the 16:9 screen in the middle is vinyl, but in the upper left corner you can see one made from acrylic.
A look around the GPS site and videos will give you enough ideas about building a frame and stand for it. He has interests in selling them now to the backyard scientist, I have interest in stockpiling them in my quest to becoming a Mad Max Millionaire. It’s my guess and some illuminated like minded others who have used these first hand that in the Barter Economy these things will be worth their weight in silver, or even gold. I have over 75 stockpiled.
In future writings I go more into how best to acquire them for free, and other uses of the by-products from this technique of the industrialization of utilizing societies ills to become a long living warrior of the wasteland…