This heart shaped wooden chopping board has been engraved using a Laser.  The laser burns the surface of the wood to produce a blackened finish.  The power output from the laser can be adjusted to produce any depth of cut into the surface. This is important with a chopping board as you want the cut depth to be shallow or crumbs will fill the lettering and it will be difficult to keep clean.  One important point is that wood from different trees creates different colour effect when burned with a laser.  They do not all come out black.