As you may know, a burl is created when a tree grows into a large ball-like structure with lots of compact swirling grain to compensate for stress, injury, insects, fungus, or viruses. The resultant burl wood is highly prized for its beauty.
Stabilised wood is a naturally beautiful wood that is filled with resin under either high pressure or vacuum to remove all the air from the wood. The final stabilized wood absorbs very little water and is less prone to swelling and shrinkage at different humidity. Therefore, it will not warp and crack as easily as untreated wood. It is also heavier, harder and more durable than the original wood.
Stabilised blanks still may contain voids or areas that are softer than others. This is normal, and, as with any natural wood, you may need to fill voids or reinforce areas with CA / Superglue.