I've wanted a foil like this for a long time. But most of the ones I've found on the internet are the size of a whole sheet of paper and aren't cheap. If you get it from a "scientific supply company", it will cost a lot and you will have to pay the expensive shipping. I haven't checked in a while so I decided to see if some cheap imports were introduced. Turns out there are quite a few of them. I found one that was cheap but it was tiny. The whole letterhead is too big, but let's not overdo it. Then I found this one. 4x6 is the ideal size for most electronics projects and personal college use. And it was the same price as a small one. Ordered. I suspected it would be a flimsy fake, insensitive, with halos or some other flaw. He arrived today. I opened it up, flipped it over to the back of the phone and wow! Instant result, excellent contrast, instantly a blank image again with no artefacts, and it appears perfectly solid. I couldn't be happier. Complete theft. A game changer for the hobbyist, experimenter, or home teacher. A must in every scientific experiment kit!
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