Robert Marichy is inexhaustible when it comes to wood, though it would be more realistic to talk about woods as they all have a specificity, a texture, and a distinct color. Plane trees, walnut trees, olive trees, and oaks have the particularity of sometimes developing growths, called brambles or burls, which give unique veins and colors to the wood. Certain woods such as maples and red cedars from Canada can trigger dermatitis and respiratory discomfort. The turner hence has to protect himself with a mask.