I'm not sure what it actually is; it's labeled "solid balsa" and is just a block of wood. I was initially thinking it must be some sort of laminate because of the smell, but was unsure because others had said they got balsa at craft stores and all craft stores around me had the same smelly wood. But apparently others have superior stores with actual wood.Is it solid balsa or a laminated product similar to plywood? Not sure why it would smell like glue. I would skip it if that is all you can find.