LAYWOO-D3 is a new filament for 3D printers created by Thingiverse member Kaipa, which is made of 40% recycled wood held together with polymer binders. It could open up a new realm of possibilities for 3D printing and furniture making. The 3mm zero-warp filament, designed for RepRap 3D Printers and similar, produces items that look and smell like wood.
The printed wood appears similar to MDF and can be grinded and painted. It is even possible to print tree rings at various temperatures; 190°C creates a bright color, while 230°C produces dark wooden effects. You can watch the video below to see the filament being used for 3D printing: