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BF3D keeps resetting to XYZ every time I go to run the programs, why?

CMM2020
The 3D Best Fit alignment I am using always seems to switch back to XYZ after setting the correct axis for each alignment feature.
I don't recall it doing this in the past, I also noticed some programs don't do this. What am I missing? How do I get it to remain?

I usually pick up a fixture using the tooling bushings, then create an iterative alignment off of the bushings.
Next I pick up the datums (4-Way, 2-Way, A-Nets) and will perform another iterative alignment off of the datums unless there is funky stuff happening at which point I will perform a BF3D alignment instead.

I am noticing my BF3D alignment needs to be recomputed, why is this happening?

Thanks for any help!

Slight smile
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  • What is the big difference between Iterative and Best fit alignments?
    Can someone explain this to me in a summary mode or should I use AI to summarize it for me? hehe.

    How does the machine behave when calculating the different alignments?
    BF3D you're able to align things that are not on an XYZ plane perhaps vs. Iterative having to be on an XYZ plane built square to grid else it throws up an error?

    I'm pertaining to datums on a fixture, and as I am writing this thinking about it I am starting to answer my own questions haha.
    When you have datums that are not A B or C (auxiliary datums that should not be used for alignment but support) that's when BF3D comes handy for fixture shops rather than production shops?

    Any info on this is greatly appreciated.

    Thank you.
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  • What is the big difference between Iterative and Best fit alignments?
    Can someone explain this to me in a summary mode or should I use AI to summarize it for me? hehe.

    How does the machine behave when calculating the different alignments?
    BF3D you're able to align things that are not on an XYZ plane perhaps vs. Iterative having to be on an XYZ plane built square to grid else it throws up an error?

    I'm pertaining to datums on a fixture, and as I am writing this thinking about it I am starting to answer my own questions haha.
    When you have datums that are not A B or C (auxiliary datums that should not be used for alignment but support) that's when BF3D comes handy for fixture shops rather than production shops?

    Any info on this is greatly appreciated.

    Thank you.
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