i have these two 4-edge lobes because i want to design a supercharger and i dont know how to mate them...any help would be greatly appreciated :)
You can use the origin planes and axis to build constrains you don't have always to select faces or edges... Besides in general you can consider the face as a plane and the edge as axis
(although is not true if the face is cylindrical)
thanks a lot:)
I might have misunderstood what you wanted. But If the lobe is like a cam you can use a cam-follower mate. It’s a type of tangent or coincident mate. It allows you to mate a cylinder, plane, or point to a series of tangent extruded faces, such as you would find on a cam. You can make the profile of the cam from lines, arcs, and splines, as long as they are tangent and form a closed loop.
If I've understood you correctly, you have 2 parts that rotate in opposite directions at the same speed.
'Gear mate' should mate them to each-other.