3.0mm grey wood filament

Wood filament is a relatively new material for 3D printing

Advantages of wood filament:

Wood filament does not need a heated printbed.

Wood filament does not warp.

Wood filament looks, smlls and behaves like wood. It can be sanded and painted and is bio degradable.

Wood filament can be printed with 'year rings' by altering the temperature while printing.

Disadvatages of wood filament:

Wood filament expands a lot when it warms up, therefore it can easily clog up the nozzle.