Abstract: A writing wick for felt markers and pens is formed by an elongate bundle of individual monofilament thermoplastic strands. Longitudinal channels are defined between the strands. The strands are selectively merged parallel to the direction of the longitudinal axis of the bundle sealing and isolating the longitudinal channels from each other and outwardly enclosing the channels. The longitudinal channels defined by selectively merged strands are operatively interconnected by radial capillary ring grooves (14) or by axially extending capillary incisions 15 penetrating from the outside of the bundle inwardly in the vicinity of the writing tip of the wick. Several longitudinal channel and interconnecting capillary ring grooves (14) or capillary incisions (15) may be used.