How to attach to bodies together so objects are like bolted. I tried PhysicsJointLimit and Distance but those give rope like feeling. Objects move apart or hang around by line when using PhysicsJointDistance. PhysicsJointPin should do it by the name but no, objects still move apart from each other. PhysicsJointFixed, what is the anchor and how this should work?
This image shows what I want. Blue box is main body, red body is attached to it. When force is applied to red body, it ofcourse affects to blue what is wanted.
Other example could be airplane and its engine. When force is applied to engine, it moves plane.
How to make stiff/hard joints what does not work nor look like ropes?