(2022-02-24, 22:08)David Manley Wrote: It's interesting that the Y co-ordinate of two of the points are changed from 15 to 14. I thought the sprocket would be symmetrical (not that I actually checked!), which is why I used -15 and 15. Presumably s\57520s02.dat reflects the effective Y values as being -15 and 14 hence why you used those two values.
No, you are right.
Something went wrong they should be at 15.
Don't know how that happened as I rotated duplicates of the top one using 0,0,0 as a rotation center.