I have a weld cell layout, and I'm trying to position the robots and car parts where they need to be relative to each other. With the car parts, since absolutely everything in their jigs are in flux, the only stable references I have are surfaces (a terror to mate to and I'd have to derive the appropriate distances) and the axis of each main datum hole. I want to mate each axis with X and Y distances, just like the data I and others are working with. The axis in each is along Z. I only know how to mate it with a straight-along distance so to speak. Is there something I'm missing, or is this the perfect time to use a layout sketch? People have a habit of deleting sketches that aren't part of another feature so I want to avoid that if possible for stability. Thank you all.