I created a sphere using a semi-circle and roatated boss. On one face of the sphere, I had an extrude cut of cylinder. My second part is a cylinder I created. I want to mate the cylinder and the sphere so that, the cylinder can fit into the sphere. I am using mate, but my cylinder would still move. I am basically creating an Organic Chemistry Kit, I hate attached what I am looking for. Do anyone has any suggestion to have I should connect the sphere and the cylinder.