Functional principle and technical design:
Liquid markers work as felt-tip pens.
For liquid markers, the capillary effect is used, too.
Barrel and cap: made of plastic or metall.
The ink reservoir consists of a capillary reservoir.
Material for the tips: plastic
The tips of markers are frequently designed in such a way that it is possible to create strokes of different width, depending on which side of the tip is used.