Not just solid wood. Frequently IKEA builds will involve either pressed+laminated particle-board (most of their cheap stuff) or drywall (when you e.g. mount a bookshelf to the wall for safety.) These materials both need to be simulated as a sort of "pressed powder", I would think, and tend to both spall/chip, and potentially jam your tooling with loosened powder. I would think a large part of the "optimization problem" would be avoiding designs that require repeatedly clearing toolways of dust.