I’m trying to develop my knowledge of Blender v the many excellent tutorials. I’ve been working on a car rim tutorial, using mirror and array. I’ve managed to create the radial array but cannot get the merge first and last to function. Any tips please?
Hi johnaallan,
I don’t know, I’ve had trouble getting it working before as have others in some tutorials - in the end I joind the verts manually, a bit tedious, but hey it work at least!
Maybe someone else may enlighten us! 
To merge any vertices they have to be within the distance limit slider
Select the verticies you wish to merge starting with the one you are merging and ending with the one you are merging to, hit Alt-M and chose “last”.