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Unread 15-01-2017, 17:21
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Re: Machining precision required to make custom gearboxes

What about oblong holes? Our DIY gantry-style CNC consistently cuts oblong bearing holes that are exactly correct in the 'X' direction, but approximately 0.001-0.002 off in the 'Y' direction. That's about as close as they could get before needing to move on to other things.

As the guy CAD'ing our first-ever custom (non-drivetrain) gearboxes this year, is there anything I can do to make this a non-issue? The concern for us is gearbox longevity in ~120 matches between March & November.
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