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  1. #1
    philsr is offline Plastic
    Join Date
    Dec 2011
    Location
    pa
    Posts
    1

    Default 1mm dia thru coolant drilling x 1"

    Need advice and reccomendations on drilling thru 1in CS. I am able to do this on a Milltronics VMC at 4,000 rpm, 1,000 lbs pressure introduced into toolholder.
    Mitsubishi drill has (2) .005dia thru holes. Limited to 4K RPM by coolant inducer.
    Mits says it needs 10K- 16K Which makes of machines should I look at?

  2. #2
    csteen is offline Plastic
    Join Date
    Dec 2007
    Location
    Idaho
    Posts
    28

    Default

    Without knowing the outside dimensions of the part see if someone in your area has a edm "hole popper" we use ours for .5mm holes .800 deep. Can't imagine doing very many small hole any other way.

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