When joining parts from disparate origins certain objectives need to be satisfied for success. In regards to this design, the object is to reduce the parts to as little as possible.
The Carpenter's level needed to be trimmed, so I made a template before cutting to manage the scrap which I wanted to use as a strap-horn to make it balance for standing and playing, walking, or sitting on a stool and playing with it hanging from the shoulder strap.
Here is how you carry the curtain hardware back from the store and have your hands free for playing.
When a Standard scale electric bass neck is married to a small bass amplifier, very little material is really needed if it is sturdy and stable stuff. The tool for that job is a tool. Take a look at one called "LTD" on the "Simple" page. It's the same neck, but that one is not nearly as simple.