In this video, I transform a rusty ball bearing into a shiny, razor-sharp karambit knife, showcasing my own design. Some clips were captured using my personal phone. Precautions: - Always wear leather ...

So you've just finished slicing up an onion. Maybe it'll go into a pot to for some French onion soup, or perhaps you're going to caramelize them and put them on a pissaladière, a French-style pizza.