Yeah getting a lare enough slab was a PITA...only place in Finand that had some was WAY too expensive, but I found a guy in sweden (
www.masurmannen.com) who was a bit more reasonable. The slab was originally 500x300x60mm, and it cost me around 60€ (~600SEK). That dude alo knew the value of good customer relations! Whenever I mailed him a question it took no more than a day to answer, and I mailed him around 10 times.
Oh, the rest of the bass is made from ash (body core) wenge (center of neck and body accent lamination) red beech (sides of neck) and ebony (fingerboard). I'll post a pic to give you a hint:
As you can see I've taken some inspiration from Marleaux !