Settign up a pole vector causes mild unwanted joiunt rotation help

[soulismissing]

I am rigging a leg with an IK and a pole vector for the knee control. I set the preferred angle and have zeroed out the thigh bone and corredcted all of the orientations. when i set the pole vector it causes a very mild amount of rotation shift every time. been working on it for a day and a half, at this point i think it is just somethign super simple I am overlooking. PLEASE HELP???

[jeofy]

Indeed it is a simple process or may be typical but many of my friend makes this mistakes.

1. if the leg joints and pole vector are not in a plain then it could cause a mild shifting on legs.
2. if you sure that everythings are in order then may be the joint orientation of those leg joints(excluding first leg joint) have two channel values.

[jbuck]

Simple solution to your problem for manual rigging:

1) Create a control object to be used as the pole vector control
2) Align the control object to the "knee" or "elbow" of the IK chain. Align both translation and orientation.
3) Translate the control object along local axis away from the "knee" or "elbow"

As the previous poster suggests, the control and IKRP solver need to be aligned (on the same plane) or you will have a mild shift when the IK effector is created.

Also a good idea to set the joint orientation before applying IK.