Should you use a wood-cutting spade-bit in metal? Specifically Aluminum. The internet seems to have to primary opinions, "no, that's really dangerous," and "I've done it." This week, with Steve Westwood and a bunch of 9th grade robotics students, I changed my opinion from the former to the latter. - Use a drill press. I still feel like hand-drills would be dangerous (heheh, we'll see when and if I change my mind on that), and might not be effective. - You want "chips," not just friction and tiny grindings. - Using cutting fluid (or some other oil in a pinch?) will at least tell you if you're heating things up to the smoke point of the cutting fluid, give you a warning that you're getting too hot, and a tiny thermal buffer for you to realize, "whoa that's too hot," and stop. - For the love of the FSM, clamp your work in such a way that if it becomes unclamped and spins, it won't disembowel you or remove appenda...