MycoComposite can be cut with a bandsaw, tablesaw, drilled into, laminated with wood, etc. The smaller the substrate the better precision on a CNC router. Large substrate yields more tear out, just as 80 grit sandpaper carves away more wood than a finer grit; you're reliant on the particulate size.
We recommend natural, biobased sealants as the purpose of the material is to not add toxins to the environment. The material can be sanded and finished with beeswax, milk paint, water-based polyurethane, and more.