To give the guitar more stability, I created a tail piece using the angled end of the fence rail.
- Cut a 3" piece of fence rail that includes the angled end
- Then, using the same score-and-chisel method you used earlier, cut that piece down to the right depth.
- This is your tail piece
- Sand the edges of the angled end so that they are a bit rounded.
- Fit the neck through the notch you made in step 2 so that it is sitting on top of the 2 blocks you made in step 5.
- Underneath where the neck is sticking out of the notch, butt the square end of your tail piece up against the cigar box.
- Mark the neck where the tail piece hits the cigar box.
- Glue the tail piece to the bottom of the neck in the spot you marked.
- Clamp it and let the glue dry.