If I do the following:

  • Add a NURBS curve
  • Select a control point
  • Press N and change its y property to 0.0
  • Repeat this step for all the control points of the NURBS curve

Then I'm unable to edit the single control point: if I select a single control point and try to move it, the whole NURBS curve with all the control points are displaced. It seems like the curve becomes a whole object whose single points cannot be modified. If instead I just change the x,y,z values of the single control points through the panel they are edited singularly.

  • $\begingroup$ Can you give us a screenshot? An animated GIF would be even better. $\endgroup$
    – Matt
    May 26 '16 at 20:16
  • 1
    $\begingroup$ Did you by accident press the O key and turn on proportional editing? Try disabling it in the 3D view toolbar at the bottom of the screen $\endgroup$ May 26 '16 at 20:18
  • $\begingroup$ Yes, I had proportional editing turned on. Thank you for the answer. $\endgroup$ May 26 '16 at 20:22
  • $\begingroup$ Hey @DuarteFarrajotaRamos... that'd make a pretty nice answer. Better get that posted before someone else does ;-) $\endgroup$
    – Matt
    May 26 '16 at 20:52
  • $\begingroup$ Hehe I didn't deem it was worthy of a full answer for such a common and small problem, but I'll post it bellow. Thanks $\endgroup$ May 26 '16 at 22:52

Sounds like you unintentionally pressed O key by accident and turned on Proportional editing.

Try disabling it in the 3D view toolbar at the bottom of the screen


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