UV unwrapping mesh with radial array modifier I have this floor mesh which was modeled using the array modifier w/ rotation to create an hexagonal shape. I started unwrapping and marked my seams (in red). The edges selected in ORANGE are the ones on which I do not want any seams, but they happen to be on opposite sides of the mesh. Therefore I need to align them (as if they were merged) but the weld and stitch commands are no good because they are on opposite sides of the mesh. How to superpose them precisely on top of each other so there are no visible seams, or at least how do I align these islands based on the selected edges without moving only the edges and distorting the map (I need the whole island to move along).
Enable UV snap and change it to Vertex, then move one island till it snaps to one of the connecting vertices.  





Select the connecting vertex and snap 2D cursor to its location using Shift+S Shortcut and change Pivot Point to 2D Cursor





Select one UV island and rotate it till it snaps to the other side of second UV island.