parametric lego duplo
thingiverse
To affix a DUPLO brick to other objects, I edited the scad file with an additional 4th parameter (nibbles on or off). Initially, I imported models into Meshlab and removed the brick caps, but this method was inefficient as suggested by commenters. This idea led to a larger project: http://www.thingiverse.com/thing:2106. For further information about my experience with the RapMan, visit http://edutechwiki.unige.ch/en/Meshlab_for_RapMan_tutorial and http://edutechwiki.unige.ch/en/Sketchup_3D_printable_objects_tutorial.
With this file you will be able to print parametric lego duplo with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on parametric lego duplo.