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  1. 14-11-2018 #1
    Dave_stoke's Avatar
    Lives in Chell, United Kingdom.
    Dave_stoke
    Last Activity: 31-03-2019 Has been a member for 3-4 years. Has a total post count of 46.
    Oh not with mills below 0.5mm I broke all those, my machine isn't quite gentle enough

    Sent from my F8331 using Tapatalk
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  2. 15-11-2018 #2
    Richard's Avatar
    Lives in dorchester, United Kingdom.
    Richard
    Last Activity: 11-01-2020 Has been a member for 7-8 years. Has a total post count of 74. Received thanks 2 times, giving thanks to others 2 times.
    Just found GWizard.

    It's telling me, for a 12mm 4 flute endmill in cast ali, 4148rpm and 427 mm/min for HSS.

    For Carbide 6222rpm and 525 mm/min.

    That seems very consvative.

    If I set the surface finish from 1% to 30% the feed rate doubles.


    If the tool size drops to 4mm then the RPM goes up to 18666!
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