Ink a clip by hand. Every frame is rebuilt from parallel pen strokes laid in layers, with more layers crossing in the shadows until the darkest areas are nearly solid.
Spacing and weight
Line Spacing sets the gap between strokes, and Nib Weight their thickness. Wide spacing with a heavy nib gives bold, graphic frames; tight spacing with a light nib looks like fine illustration.
Wobble and contours
Hand Wobble bends each line as a real pen would. On video it changes every frame, which gives the gentle boil of hand-inked animation. Contour Line adds outlines along the strongest edges to hold shapes together when the hatching is sparse.