Some experiments with Lego DUPLO and personal fabrication
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This project contains some experiments with Lego DUPLO and personal fabrication. Similar examples can be found at



Dimensions and more information about Lego and Duplo bricks can be found at

If you cut material you must think about the width of cuts, for instance laser cutters burn away some material. I expect this to be about 0.25mm, so I'd naturally get the required gap between parts.

Unfortunately I have not found a satisfying CAD software for 2D design, so I started with Inkscape.

You can use any stable material but plywood might be the best choice. 2mm, 3mm, 4mm.


Either you have access to a 3D-printer, 2D-Cutter etc. or you must order the parts at some service. I tried formulor.

See also


  • templates contains template files from formulor/ponoko for 2D-cutting and an overview of build area sized compared to a duplo grid (grid.pdf)
  • marble-track contains my first experiment, derived from to be printed at formulor.