Using NDBPro Wrapper, (by Walaber) Is there a way to join seperate bodies, (with seperate collisions) so that their relative positions remain constant? I want that the objects act as if they were glued or nailed to each other. I know about joints, but the objects seem to wabble and rotate uncontrolably.

Does anyone have any idea how to do such?

Yeah compound collisions. You asked about it in your other post...

Compound collision will work in certain cases. I need to be able to join and un-join bodes. I know how to create compound collisions, but the only way to update them is to rebuild the whole compound. That could be real slow.

All I want is that my joints are not bouncing all over the place. For instance, if two joined objects fall to the floor, they star bouncings apart from each other.

I've found joints are only so strong and they may bend past their limits if too much force is used. I had to switch to a lower energy model for my game because of this. So not sure how else to do it... sorry.