Provided you have all the right tools, it shouldn't be that hard to accomplish. Just wiring and painted you might find difficult.
How to build a Gibson SG
That would be fucking awesome to do, but I would most likely need to get a nice router with an expensive bit, and a CNC machine. I can't afford that of course. Without those I probably wouldn't be capable of making a proper, practical guitar. What I was just talking about is simply buying a pre-cut body and neck full and ready to go, and customizing everything from there. And yea, the wiring's the main thing I'm concerned about. I'm sure I could do it, but it may take a bit of time... I'm not too sure how complex the wiring on these can get. Though, I do certainly have all the proper tools to do so.
Oh, and the painting shouldn't be too big of a problem. Could be costly, but I know I could do it. The swirling video I posted in the other thread is exactly what I want to do. Not too hard, just need the right acrylic paints and a nice large bin to do it in... even a garbage bin can do a good job. After that I believe all that's left for the painting is the priming, and that's it. If the guitar neck I get is completely blank with no staining/finish, then I guess I'd have to add that too, but that's it.
Any ways, I just went out and got a new guitar strap today. Figured I'd show it, I think it's pretty awesome.
Sorry that the two images are flipped but... too lazy to flip them back.