deep hole drilling

  1. prasad

    Deep Hole Drilling In Aluminum

    Guys, I want to drill a deep "through hole" in a 2.65" long aluminum block. The hole will be 0.25" in diameter. The alu block is 1"x1" square. I know I must start with a center drill. After that I am not sure. What should be done to prevent the drill bit from wandering? I have drill bits that...
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