As I understand it, they do have to use special glue formulations and methods. The oiliness is extreme. My only experience with the oils in CB is in trying to get a urethane finish to dry on the stuff. Thank heaven I tried a scrap piece first - the wood's so oily that the urethane never did dry fully. Ironically, cocobolo gets on just fine with nitro lacquer, so I did the finish with nitro. While a little more prone to wear than harder finishes, coco through a nitro clear coat is as pretty as it gets. On the other hand, the dust from dealing with CB is extremely irritating to most people (some to an extreme) - resulting in headaches and skin irritation. I wonder how the Alembic folks keep that problem in check with all the coco they use.