Houston, we've got a problem.
Yup, I just ran across a discovery that forces a significant change to the direction I wanted to take with this project. To recap from my original post, I wanted to put my Kahler on this guitar. The Kahler in question is the hybrid type that hooks onto the stop-tail studs.
Here's the little honey, right here:
Well, yesterday evening I just happened to be watching a youtube video on a Gibson Guitar factory tour, and there was a shot of chambered body blanks, which suddenly caught my attention. I knew this thing had to be weight-relieved when I got it. It is very light...almost as light as my SGs. But, I saw some heavily chambered body blanks in the video. This set me to Googling and I found this link, with X-Rays, over at My Les Paul, which discusses different chambering styles for different years.
Gibson Les Paul 101
Well, it turns out the year of my Studio husk (2007) is supposed to have chambering that looks like this:
Yikes! As you may imagine, this created a bit of concern for me. I began wondering where I could get my guitar X-rayed to confirm it's chambering topology. Then, I hit upon the idea of using my stud finder to take "soundings" of the interior of the guitar, to see if I could map out the chambers.
Here's a pic of me using the stud finder on the guitar:
The good news is, this worked very well. The bad news is that the stud finder triggered exactly where the X-ray above suggests it should, including that long, hollow channel that runs up between the stop-tail and bridge studs. The only real difference being that the guitar in the X-ray is routed for a P-90 in the neck. Mine is routed for two humbuckers. But, everywhere else that mattered, for my purposes, was just like that X-ray.
So, this means the Kahler is out of the question, for two main reasons. First, installing a Kahler still requires routing. It uses a two-tiered hole. The lowest tier goes about 1" deep into the top. That would penetrate directly into that hollow channel between the studs. It also is a wide route that would go almost to the stop-tail studs, taking out even more of the anchoring wood. Second, when I got the guitar, I taped off the top and began laying things out. To use the Kahler, I would have had to plug and redrill the stop-tail studs about 5/16" to 3/8" further back. Well, that would mean I'd drill right into a void.
The bottom line is that I have no choice but to proceed with this build as a traditional, stop-tail setup.
This is disappointing. But, not devastating. Without exaggeration, this Studio is really a semi-hollow guitar, sans f-holes! Honestly, that does make me feel a little better about it. After I discovered this, I actually considered routing an f-hole in the top half of the rear bout! But, I don't feel like finishing the edges and adding to my risk of feedback, so I'll leave it alone.
Ah, well...fun in the fast lane!