I'm trying to mate the 2 simple chain links shown in the above assembly but can't crate a contact mate between the 2 curved ends. I initially thought that a tangent mate would be possible, but I can't seem to do that. I've also tried creating sketches (shown in picture 2) and attempted to constrain the arcs, but to no avail. Does anybody have any ideas? I've attached the chain link models to play about with.