I joined the fuse halves and lined them up using a straight edge and some angle stock. I glued the doubler in place and weighed it down until it was dry.
By the way, I'm using Titebond 2.

After the glue was dry I pinned the fuse halves together and lighly sanded the halves until they were identical.

Now it's time to mark the bulkhead locations on the fuse sides.