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IndustryArena Forum > MetalWorking > MetalWork Discussion > Do I need to center drill?

Thread: Do I need to center drill?

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  1. 06-14-2005, 09:57 PM #1
    jderou
    jderou is offline Registered
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    Sorry, the print is wrong, it should say clearance hole for 1/4-28 bolt. It's not that its a hard part to make, its that their are a lot of them, and my time is priceless . I don't want to waste time on operations that aren't necessary.
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  2. 06-14-2005, 10:05 PM #2
    nervis1
    nervis1 is offline Registered
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    If you can get away with using screw length drills you don't need to spot drill first.
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