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  • If you need accuracy of removal, probably the best bet is spark erosion, at a cost £££.
    The difficulty will be drilling in the centre of the broken part.

  • If you need accuracy of removal, probably the best bet is spark erosion

    EDM doesn't get you any better than milling/drilling, your main problem is still accurate positioning. EDM is only necessary when whatever is stuck is too hard to attack with a carbide cutter.

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