Hi all.

I've been away from building guitars for well over a year due to depression after a family bereavement. My current build is two three string necks and a four string for good measure. The thing is, I don't know what to do with it as far as tuning. I initially thought to do a major, minor and 7th tuning (hence the four string) but now I'm wondering how common it is to have major, minor and 7ths together in blues tunes. Commonly enough to warrant a triple neck guitar?

So, to the request for advice and the question. How would you tune a triple neck guitar with two three string necks and a four? As above? Maybe you would have the root, the 4th and the 5th of a scale? Perhaps you'd go minor, major 7ths (or just 7ths I think they're referred to) and minor sevenths? Maybe you would have two three string necks and a baritone or tenor ukulele? Do you have other suggestions? I initially planned on having it as all slide necks hence the triple neck configuration but I've also been wondering about fretting the necks using the wire wrap method.

I really need advice here so any help is hugely appreciated.

Thanks in advance and I hope that you're all keeping well.

Bear.