I was recently in my friend’s cnc machine shop, when an operator came in to discuss which of three identical Bridgeport’s that they were going to use to machine some components.
He past a comment to me about the different between these machines performance, when they had consecutives serial number!
So I ask him how regularly did he test these drawbar clamping force, and I knew from the look on his face he did not check them, so I went and got my old Clamprite tester, and he was staggered by the results, which clearly show why the performance of his machine varied so much.
So I wondered how regularly do other check their spindles?
NB. You wouldn’t drive your car around with loose wheel nuts