Our company designs custom benches. When designing the frames in Solidworks we use the weldments feature with a square tube profile. We then have a nylon inserts that go into the bottom of these weldments as feet. I have been trying to use mate references on the feet part to make it easier for me to insert these, so I can just drag and drop the foot onto the bottom face of the leg. However I can't figure out a mate combination that works, and every tutorial I have come across seems to need a concentric mate. Any help you can offer would be appreciated.