[apples000]

We got a box of roughly 100 1/8" bits for our 4' by 4' cnc router to cut sheet aluminum. Our sponsor gave us the box several years ago, and we've only broken a few and we've cut a TON of sheet metal. The bits are similar to 3317A21 from mcmaster, but they are a little different, and the writing on the box is in Chinese. The trick is to get the feed rate correct, and have an air line always pointing at the bit.