Stitch UV maps in Blender
To stitch separated UV islands do the following Go into Edit Mode, and make sure Face Select Mode is enabled Press (A) to view all UV island In this example, I have two separated UV island and several loose faces Press (Alt + A) to deselect everything Then Press (L) to select only the Linked Faces of a UV island Make sure Seam Select is enabled, the Seam Select limits the selection to Seams. (Shift + Select) the face you want to stitch to the UV island Go into the UV Image Editor, and make sure Edge Select Mode is enabled Select the Edge which is the border between the UV island and the loose face Press (V) to stitch The edge now will light up green Press (Enter) to apply the stitch The loose Face will get moved and stitched to the UV island.