Top is maple, bottom is some kooky looking mahogany I found. Finish is a oil/urethane, about four coats, then two coats of gloss poly on top. Goncolo neck, ebony board. DiMarzio pups (I love these). 'Lectronics go in through the front. Walnut veneer aroune the cavity covers to make up the saw kerf. This guitar was plagued with problems, and it is absolutely amazing it even got finished. Really sub-par IMO, but everyone who has seen it loves it. 1. The piece of purpleheart on the back is to cover up a huge lesson. Use brad point or forstner bits, thats all I have to say about that. The bit grabbed, and blew all the way through the body, leaving a very nasty tearout, about 3/4 inch, on one hole. 2. The electronic cover broke in half at one point, thank goodness for glue, you can barely see the crack at all, would not notice until I pointed it out. 3. Had a template slip on the neck pocket, resulting in two layers of mahogany for the body, and one layer of maple, separated by a layer of walnut veneer as accent. 4. Decided for some insane reason to solder at the kitchen table rather than the shop (bench was too dirty to mess with...), and only when I smelled smoke did I realize I had knocked the iron off the stand, the mat was smoldering, and I had burned a black charred mark on a $1000 oak dining room table. Guess I put finishing technies to work on things besides guitars next... 5. Oil finish won't stuck to glue? You don't say. I only thought I had all the glue cleaned up, but when buffing it out? Nope. Now I have two ugly spots. There is a bunch more, but I'm going to get back to playing it now. Plays great, sounds awesome with some half round nickels. Needs a different tone cap to cut on some tone knob noise, but other than that, a very playable bass with a couple small cosmetic issues. This makes number three for me, still learning!