1 strokes · 13.5 m of ink · 0.21 m pen-up travel

Harmonograph

One unbroken line traced by four swinging pendulums as they wind down.

Seed

The same seed and settings always give the same drawing.

Pendulums

Horizontal, first2.000

Simple ratios such as 2 : 3 make tidy knots

Horizontal, second3.000

Vertical, first3.000

Vertical, second2.010

A tiny offset from a whole number makes the pattern drift and fill in

Decay

Damping0.0040

How fast the swing dies away

Run time90

Second pendulum strength0.50

Paper and pen

Paper

Orientation

PortraitLandscape

Margin15 mm

Pen width0.40 mm

Match your pen. Sets the line width in the preview and the file.

Sheet 297 × 210 mm, drawing area 267 × 180 mm.