As the title describes, recently a couple of machinist have decided that they do not want parts with precut lead holes from our CNC cutting tables. Instead, would rather start any hole of any tolerance from scratch with a center drill or centercut endmill.
I have inspected the parts off the table and found nothing out of tolerance and have only been told its "easier" to start with a blank. From a time perspective, I cannot understand why you would want to start with a blank plate every time. For example, laser cutting a 3.25" lead hole in 1/2" A-36 to be finished at 3.505" would take significantly less time than roughing in one on a VMC from scratch.
Can someone give me some clues as to why you would want a blank plate every time?
I have inspected the parts off the table and found nothing out of tolerance and have only been told its "easier" to start with a blank. From a time perspective, I cannot understand why you would want to start with a blank plate every time. For example, laser cutting a 3.25" lead hole in 1/2" A-36 to be finished at 3.505" would take significantly less time than roughing in one on a VMC from scratch.
Can someone give me some clues as to why you would want a blank plate every time?