Here’s some free advice if you ever find yourself in a post-apocalyptic world and need glasses: squint. Because after watching How to Make Everything attempt to make a pair of prescription eyeglasses, let me tell you, it’s going to really, really hard for you to actually make a pair yourself. There are just so many…
Source: Gizmodo – Making a Pair of Prescription Eyeglasses From Scratch Is So Damn Hard