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1. Hard to say as I've been doing this for 28 years. The most recent complex part I have machined is in the picture in my profile. It is a high pressure turbine inlet for General Electric. It has 20 bores with 40 grooves and 40 hook or "j" grooves, very close tolerance work. The joint has to be central and perpendicular within .001 inches which took three shifts just to set up and about 400 hours to machine, including flipping it over and machining the other end.
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