BDO World Darts: How do you make the perfect dart?

The darts calendar climaxes in January, with the BDO World Championship beginning on Saturday, five days after that of its rival, the PDC.

While the players have been relentlessly sharpening their skills, Bridgend's Nodor International has been toiling to ensure their "arrows" hit the mark.

But what goes into perfecting a top-class dart? Simon Hall, of Nodor, explains.