Duplo compatible marble run cones
cults3d
Here's a set of cones designed specifically for the http://www.thingiverse.com/thing:159219 marble run system. To accommodate the larger ones, I've included variants that can be printed without additional support material. Update 2014-12-19: The OpenScad files have been added to this collection.
Download Model from cults3d
With this file you will be able to print Duplo compatible marble run cones 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 Duplo compatible marble run cones.