You're a hardware hacker that likes to build devices the way they SHOULD be built - meaning, the way you like them! You've made some cool prototypes that are useful for you, so maybe they might be useful to other people too? Maybe you should manufacture some? You might help people out and even make a bit of money on the side. But the product manufacturing landscape is a figurative minefield, littered with traps that will explode your costs and time. Using real examples, I'll present all my own naive, ignorant and just plain stupid mistakes so maybe you can avoid them.