fractal string art toy
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Spangler is a fractal string art toy for making little things like:

spangler movie

What is Spangler?

Spangler is a graphics algorithm that displays number sequences (for example 2,6,5,4,3) in a fashion that can be described in English as

Draw 3 groups of 4 groups of 5 groups of figures with 6 vertices where the lines travel a distance of 2 vertices.


description spangle spec image
Triangle 1 3
Square 1 4
Pentacle 2 5
Star of David 2 6
Sierpinski's Triangle 1 3 3
Sierpinski's Triangle 1 3 3 3
Sierpinski's Triangle 1 3 3 3 3
a rather pretty one 1 3 5 2 9


try it here


  • up arrow increase value
  • down arrow decrease value
  • right arrow move to next term
  • left arrow move to previous term
  • enter mark the term as the one to color, or cycle colors
  • del delete the term


  • Safari: works well
  • Chrome: works well
  • Firefox: an issue has been reported but not fixed
  • IE: unknown