If you’ve always dreamed of a world where all your Lego, Duplo, Fischertechnik, Gears! Gears! Gears!, K’Nex, Krinkles (Bristle Blocks), Lincoln Logs, Tinkertoys, Zome and/or Zoob pieces could be used together, behold the Free Universal Construction Kit. The kit offers free plans for almost 80 different adapter blocks that can be created with a household 3D printer and used to interconnect any combination of the above mentioned construction sets.
However, before you jump in, it should be noted that you might need to perform some manual adjustments on the resulting pieces due to the fact that most 3D printers don’t have the resolution required to perfectly duplicate the tolerances necessary to make pieces snap perfectly together:
Lego bricks interact with each other so smoothly thanks to manufacturing tolerances on the order of 10 microns, while most affordable personal 3D printers (like Makerbots) have an X-Y resolution of about 100 microns and a layer thickness almost four times worse than that.
If you’re still on board, you can check out a video overview of the set after the jump.