Lenses can be pretty darn pricey, so instead of buying them, why not just make them (or at least coat them) yourself? Thanks to Ebayer Hirschku39's lens coating machine, you too can produce your own glass. You'll also need materials and a factory full of other machines, but you have to start somewhere.

This "like new" contraption is capable of treating between 20 and 30 lenses an hour. Users control the coating "recipe" via a 3 1/2 inch touchscreen. By the way, shipping costs a cool $1,500.

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