Check out this line of parts designed to connect between various building toy systems.
http://fffff.at/free-universal-construction-kit/
The company doesn't make the parts, they offer the models as a download and you supply the 3D printer.
[img:640:905]http://assets.thecreatorsproject.com/bl ... ail_em.jpg[/img]
<iframe src="http://player.vimeo.com/video/37778172" width="400" height="300" frameborder="0" webkitAllowFullScreen mozallowfullscreen allowFullScreen></iframe>
custom inter-system connectors
Moderator: viclug