Avoiding Collision of Strap Button Screw with String Ferrules

Great question and good thinking, subbed for info!

 

You are right to be concerned. A simple screw into the wood would likely break out in that situation. I would epoxy in a brass threaded insert, and use a 6-32 hardened machine screw for the strap button.

 

Bruce is onto it... an alternative idea is to just install the strap pin a little off centre so that it fits between the ferrules...

 

Or if you like symmetry, you can install two. Put them about 5 inches apart. You only attach the strap to the top one, but having two allows the bass to be more stable when you lean it against an amp.

 

You don't have to move the strap button all the way outside of the string ferrule area, you just need to move the strap button over by 3/8" (assuming 3/4" string spacing) to get between the E and A string ferrules. If you really think you'd notice that small a difference in strap hang, I think I'd just get a dedicated strap.

 

If you want to be really cool and secure, make up a small brass block that's inset into the heel of the body. In the center is a 6-32 threaded hole to take the machine screw with the strap button. The brass block is held on with two long screws that go into the body on either side of the ferrule hole of the A string.

 

I position the (Dunlop) strap peg in the spot where when clipped to a strap it is one of the two points touching the floor to allow the bass to lean safely upright against an amp. (on stage) It also helps with general balance of the bass when playing.