The "hacks" part was per them, not me lol. I think the idea was that if we had to replace a mold half that it was ran to the numbers and it would still fit the other mating part. This was a temperature controlled shop that calibrated everything to 2/10,000ths and the ex-military owner was super picky and kept everything spot on. It was a wonderful shop with all the equipment being so cherry and tight, yet stressful place to work because there was no excuses for errors!Harold_V wrote: ↑Mon Nov 30, 2020 5:58 pmNeed I say more?
Yes. Hacks. Or those who didn't want to make the same mold (or what ever component) a second time because of a mislocated dowel.Match drilling/reaming with the 2 parts stacked was for hacks lol).
The hack you suggest is called insurance. Why risk failure, when there's a sure-fire way to ensure that the end result is functional?
That's called dealing with backlash. It's no stranger to those of us who were trained on manual machines, and should be well understood by folks who use DRO's, too, as how the screw is loaded on any machine can spell the difference between success and failure. Those who ignore backlash are asking for problems, even when they use a DRO. Not so much of an issue with a CNC, as the feeds control location, but even they can have problems if the don't have ball screws, or the ball screws aren't tight.If you went over, you cranked it backwards and then snuck up on the location again.
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Agreed on the ball screws and backlash. The EZ-Trak had ball screws and repeatability was very close, but we did wear out a set hogging alot of stainless with roughing mills. I haven't worked in the trade for over 15 years so a lot of the proper terms have left my memory, whereas the processes and proper ways to do them have not....yet.