I've poked around and seen some auto body panel drafts with datum targets. I'm in a simple part environment, but this interests me. I wanted to ask how the GDT print and possible CMM alignment works with that. If you design the hood of a car you may have points to establish a Z level and origin(3,4,5,6,7 pts lets say), but when you go to make secondary and tertiary datums can those be any angle desired as lond as they lock the part down or do they have to be the typical perpendicular angle block type surface plate manual measurement deal? Thanks. And do prints typically only have the 3-2-1 points or am I seeing the basic examples online wrong. I'm seeing a few examples with only 3 datum A targets to get the primary plane(a perfect plane due to only 3 targets) then only 2 datum B targets to get the line down and then only 1 C to get the point down. That only makes sense to me in the perfect square part world. Was hoping someone could help with my understanding.
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