Hi,

Perhaps it's normal for the team who wrote the equation driven curves that the spline of the attached curve (which is NOT a spline, btw, so have not to be built after a Spline->Equation driven curve of the sketch menu, but would have its place in the Insert->Curves menu !!!!) so, the "spline" has to be fixed, with such construction, and it would be IMPOSSIBLE to drag it in the whole sketch, if equation driven curves would be well defined and well built !!!!!!

It's a bit frightful, yet, that a CAD program can stay which such bug at such basic level of the features, at the 20th release.

Problems don't end here :

with this other attached file, the curve has to begin at the circle of diameter 70, to end, after a short course, at the circle of diameter 120.

If I change the dimension 120 to 100, the behaviour is a bit more crazy, but returning to 120, then the curve is OK.

Just try to re-enter 100 as final dimension .....

Frightful or dreadful ?

Or some upcoming Halloween reception ?