> that giant fresnel lens. These things are notoriously expensive. Didn't read TFA but the picture looks like he got it free off of Craigslist--many people are

> that giant fresnel lens. These things are notoriously expensive. Didn't read TFA but the picture looks like he got it free off of Craigslist--many people are unloading projection TVs these days and they use Fresnel lenses. That looks like one of them.