Hi! And thank you. Herr I'm using Korn's Lithographic Crayons which are made of highly greasy stuff so that the stone surface can absorb it. They are soft and greasy and the stone has a natural texture that gives me that pointilism look.

Hi! So, this wood is called MDF (Medium Density Fiberboard) and can be found at places like Home Depot. They come in different sizes. MDF is soft to carve. Slightly tougher than linoleum, but it's the next softer thing. It has no wood grain so that helps too. It holds detail under pressure better than linoleum, so you may be able to get smaller lines in there depending on your carving style. Hope that helps!