I have been making a CBG for a Micro Brewery in the area and am incorporating a beer bottle opener for a string holder also. Interested in how you'll accomplish this.
Hi Robbie, there are a number of ways to mount a "tailpiece", but to advise you fully would mean a look at your box and the opener in question.
The simple explanation is this.....
It would also have a bearing on how deep your box is here is a sample set up of one of mine.
This opener was cold bent in a vice, and its pretty old and thick, don't bent it to a full 90deg, leave it angled up slightly aimed at the top of your bridge.
This box is deep enough. One screw in the end will hold it in place. Possible through a strap button. But you will need a tail block inside depending on the style of box you are using.
Good luck, the fun of this CBG building is the creative thinking required at times.
Thats about how i whoed do it to , drill 2-3 mm holes 3 or 4 what ever needed, in the top part, for the strings to guide treu, and sins mine is a pressed opener , i will bend it and flatten out the strappside of the box so to say drill a exsta hole there ,whit a 4 string i take a bolt treu and treu for the strenght, and the second screw i use for the strap holder. but some times you need to make a sunk hole cose the wood is to thick to get a bolt treu, but my favorit stringholder is still the lemon sqweezer, but thats mostly estettic resons, and sins my theme is a Munchen Beer crate i went for the beer oppener.