Arrow Through Bottle impossible object

This is an impossible object, the puzzle being ‘How was it made?’. The arrow is one piece of wood and is much too wide to be pushed through the small holes in the glass bottle. The object was a gift from David Springett. To see how he made it refer to his book ‘Woodturning Wizardry’. The book was first published in 1993 by Guild of Master Craftsman Publications Ltd, Lewes, East Sussex.