All spalted and soft woods are soaked, in polycryl for 3 days, then air dried. After semi finish machining they are soaked again for 3 days, air dried, finish machined and polished. Then the required stainless steel screws are inserted into tapped holes that have had epoxy painted on the internal threads. Epoxy is allowed to cure, for one day to lock in the screws and, then the wood is coated with clear polyurethane.
Hard woods receive the same series of steps but the soaking medium is Wood Juice.
Polycryl and Wood Juice are made by Preservation Solutions LLC.
Also all woods can be cut at different angles to the grain (see black palm example).