Home Forums General Discussion Forum Re-pivot tiny pivot HHEELLPP!! Reply To: Re-pivot tiny pivot HHEELLPP!!


    @david pierce wrote:

    Digital Tripper,
    A number #80 drill bit is extremely tiny. At .03125 diameter it is about the thickness of a guitar string. Usually drills this small are drilled with a machine called a sensative drill press with an Albrecht keyless chuck. The slightest wobble in the bit will equal a large percentage of the drill bit diameter. If you are drilling through steel this can be devistating. If you do not have the proper drilling equipment try drilling through a softer material such as brass. Make sure that the drilling operation is done with an extremely light touch and do not try drill too deeply with each peck. Although brass can in theory be drilled dry, a lubricant (oil) will be helpful.

    Thank you David,
    The best I have is a dremel with keyless chuck in an old dremel drill press stand. I tried 1/8in thick Brass and broke a bit. I guess I am too heavy handed…I’ll try again with way lighter taps to the press arm and oil and maybe I can attach the dremel to my lathe foot pedal and get it to go a bit slower. I had the dremel set on 1 (goes 1 thru 5 speed on tool) and it seemed to fast for such a tiny bit. I also tried the Harbor Freight tungsten carbide drill/rasps set and broke three of those…Dangit

    This small stuff is a lot harder to do it seems..