What Is the Strongest and Lightest Wood? | Hunker- what material is lighter than wood ,As the most common wood used for structural lumber, as when framing a house with studs, Douglas fir, technically a softwood, is light, straight and strong. You can rip two-by-fours in half lengthwise to build the framework for a crate, or anything else. Douglas fir can ...Fatwood - WikipediaWood kindling and tinder Because of the flammability of terpene, fatwood is prized for use as kindling in starting fires. It lights quickly even when wet, is very wind resistant, and burns hot enough to light larger pieces of wood.