Best fit curve to these sections method?

Hi,
V5
What method to get a best fit curve to these sections ?


BEST FIT CURVE.3dm (224.4 KB)

taken at 10deg intervals on a rear end of a brake hub, all are then swung to north and moved together visually.
I have a button for average of curves but it doesnt look good at the bend area.
I think it has a gentle curve F upwards then radiuses to G and goes straight.
Ignore the ‘kick backs’ at G not of interest.
Cheers

Steve

a) Here’s one way, illustrated with two of your curves (but not necessarily the particular curves you are interested in).

I’d start by rebuilding the curves with substantially less control points. I went with 50. Then tween the two smoother curves. Finally, fair the tweened curve as many times as needed to get a result that looks good. If you want to work with more than two curves, pair them and tween, then tween pairs of the tweened curves. Repeat until you get down to a single curve. Then do the fairing.

You will probably then want to adjust the control points manually to get to a final result that conforms to expected real world constraints.

Alternatively
b) Draw a curve through your bundle of lines by eye and adjust by control point editing to polish the positioning and profile of the curve.

1 Like

Thanks,
did the rebuild 50 then tween then fair,
wasnt aware of Fair.
then rebuild less points and set line tangent to top.
However I wasnt finding a way of getting a horiz line starting tan to a curved top, so mirrored the curve and did tan between curves !

Steve