I have an odd Alignment to get figured out, need some assitance.

[[Ri...]]

In this particular part, Circle3, Circle4 and Circle5 establish a centerline. (Ignore the Planes that appear rotated, I am working with a legacy program that was never configured properly).

The circles (3, 4 and5) are not on a Bolt Circle centerline; they construct a poor BC in my opinion (See Circle6 in the program).

The zip file is a program, its small, no CAD model.

All nominals are calculated to 8 decimal places.

I need assistance to establish a proper centerline from the three Circles (3, 4, and 5). It's what the blueprint states to do.

Any help is appreciated.

Alignment me this_Rev J_Op15_10-15-2027.zip

[[Be...]]

given that circles 3, 4, and 5 are oddly distributed, I don't see a clear way to create a centerline.  Surely there is more information in the drawing.  I checked and the three circles cannot make an equilateral nor isosceles triangle.  So it just doesn't make a lot of sense.  We could easily put the three circles on a common circle.  Then clock that common circle center to be the Z+ axis.  Or we could use the center point of any two circles and combine that with the third circle to create a line that we could clock to.  But you would need some more direction from the drawing to pick something.  Heck, you could even do a bestfit.