The Devil made me do it. I was bored and kind of curious (always a dangerous combination for me) so I did this... That's the graphite neck from a Peavey GBass on one of my Precision style project bodies. I was surprised that it only needed a minor intonation tweak considering the neck is 35 inch scale and the bridge is positioned on the body for a 34. The neck is currently held on by only 2 screws because I didn't want to make any new holes I couldn't cover with the neck plate and the lower holes will be outside of the neckplate footprint. The GBass neck is more narrow than a Fender style neck so there's a gap of 3/64"on both sides of the neck. Considering the neck is only held on by 2 screws and the size of the gaps it thing sounds fantastic, with extremely consistent tone everywhere on the fingerboard with no hot or dead spots. Even better than on the Peavey body. I might make it permanent. The PVG-P bass.
That's a huge space on both sides. If I were taking onthat project I would fill those with maple strips. My thoughts are that, while the neck it remaining straight so far, I can see it twisting out of square.
Also, I have also attached a 35" scale neck to a 34" scale body on a fretless. The intonation is not going to be perfect. It will, mathematically be off by half an inch. But on a fretless, it didn't matter to me because I don't look at the fretboard to find my way around so the fretlines and markers are irrevalent. But on your fretted board, you are going to have to realize intonation will be off.
Graphite twisting? You really think so? I thought of putting shims in there if I made it permanent (and the other two screws) or maybe even bedding the neck in epoxy to fill the gaps.
I already adjusted the intonation using my Peterson Strobe tuner and it's fine. There was enough slack on the saddle position to cover it.
There's a bunch of them. That's just what my mother always said when I got into trouble for taking things apart as a kid. Then she'd make me do something to keep out of trouble like cleaning the bathroom. Another one I like is "Idle hands are the Devil's tools"
That looks fine, not weird at all. I'd much rather have the gaps in the neck pocket than a 2 1/2" heel on a neck.
OK I understand what you meant now. Shifting isn't a problem yet but like I said I may use shims or epoxy bedding if I decide to make it permanent.