As far as the joining of two different woods we do this all the time so it is possible. As far as wood glue joints being stranger than the wood around them. This is not a given. I see people post that glue joints are stronger than the surrounding wood. It can be, but that joint has to be made properly for that to happen. Wood glue has to get good penetration(glue needs to be forced down into the fibers and pores), but not so much that you get a dry joint and lose the connection(endgrain can suck up glue and cause this situation, and too much pressure can also starve a joint). You can also have issues with wood that has a wet surface basically shielding the glue from getting good penetration. So a very dense wood or oily wood needs more pressure to force the glue in getting that penetration vs a less dense wood. Again you have to be careful because a less dense wood joint can become starved if you use too much pressure. These are things to think about if you choose to join a very dense or oily wood to a lower density wood. As an exptream example; you would have a bear of a time glueing Lignum Vitae with Balsa. Most of the woods we use can be joined just fine, but it is smart to pay attension to what you are doing(especially on a critical joint like a scarf).
I think the idea is a cool one and could look great. Give it a shot.
Peace,Rich
Good info Rich.
I was thinking of building a double cut LP type (special is it?) with some P90s, and I was thinking of doing the main part of the neck out of maple (maybe some birdseye that I have lying around anyway) and using either sapele or mahogany for the body and headstock. I thought this could be cool if I could pull it off . . .
What do you think about bonding maple and mahogany or sapele?