Help Best way to pre-bend this rod?

[josemendez]

The only problem now is that the rod (vacuum hose) shears just past the start point as soon as I press Play. This happens with 3 or 4 control points and I've varied most of the other parameters but can't see the cause here.
Can you suggest a fix for this?  Thanks       -- ian

It's hard to tell just from a static image, but possible causes for this are:
- Overlapping control points, or a single control point with incorrect tangent handles.
- Consecutive control points with opposite orientation. (Enable the orientation tool in the path editor to check the orientation of each control point).
- Rope attached very close to / inside a collider (the collider will push intersecting particles out, giving rise to similar looking kinks/bends).

We need the orientation to be constrained at the drum end (i.e., it has to come out straight, or it looks nasty).

Just enable the "constrain orientation" checkbox in the ObiParticleAttachment.