An overview of different harmonograph types is shown on this page. There are also specific pages for each type: Lissajous, 2-3 pendulum, Rotary / Linear.
Each harmonograph design, drawing, or element is created with a single, continuous line.
White ink on electric blue paper
Simple ellipse pattern
Staedtler Lumocolor on paper | 280 mm wide
A classical 2-3 pendulum harmonograph pattern
Staedtler Triplus fineliner | 44×60 cm paper (hanging off the paper table)
Staedtler Lumocolor pen on paper | backlit | 280 mm wide
The Moire pattern is in the drawing on paper (not a monitor artifact)
rotary design
simple oscillator design
rotary design (near unison)
Staedtler Lumocolor pen on paper | backlit | 290mm wide
Lissajous type
simple oscillator design
Staedtler Lumocolor pen on sketch paper | backlit | 240mm wide
Staedtler Lumocolor on paper | 280 mm wide
backlit
detail view