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    Chaz's Avatar
    Lives in Ickenham, West London, United Kingdom. Last Activity: 26-08-2025 Has a total post count of 1,654. Received thanks 115 times, giving thanks to others 71 times.
    Those are guidance and machine specific.

    Try uncoated 2 flute endmills for alu (both for roughing and finishing). Roughing 3 flute endmills (corn cobs) work well and like to be driven hard (much harder than you expect) but you must keep chips (or swarf) away from the flutes.

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