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  1. #2
    What size moulds are you looking to do? What tolerances (deviation from given size) are you allowing? What accuracy are you expecting?

    Beware, aluminium can be a PITA to get a decent finish on, especially if you haven't done it before (esp if you try running high speeds / feeds, or take big cuts).

    If you're doing ali, keep some paraffin as a coolant.

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