Four wheel drive vehicles have always excited my imagination, and this time I joined two Farrusco’s chassis in front to front as you can see in the picture below:
![F4WD](http://farm6.static.flickr.com/5029/5691610312_c72f1c7b71.jpg)
This way both chassis are fixed on each other (is this correct to say in english??) and I thought it would be cool to have them articulated in some way, so I started to design a ball link and this is the first output (oh, did I mention I have a 3D printer in the office? :D
![F4WD](http://farm6.static.flickr.com/5228/5691038441_7054b013bc.jpg)
![F4WD](http://farm6.static.flickr.com/5182/5691038823_2b8905b0e5.jpg)
It still need a bit of work because the link needs some kind of lock to prevent the vehicle to bend itself and touch the ground (gosh!! what a crappy english!!)
![F4WD](http://farm6.static.flickr.com/5147/5691039181_304912c882.jpg)
![F4WD](http://farm6.static.flickr.com/5069/5691611722_03aa3df577.jpg)
I used OpenSCAD to design the piece, it is a great tool to use because everything is made with simple commands and you can design pretty much everything!! You can download the OpenSCAD files in Thingiverse.
![Screen shot 2011-05-05 at 11.07.32 PM](http://farm6.static.flickr.com/5261/5691142131_a9e3aecd1f.jpg)
![Screen shot 2011-05-05 at 11.05.23 PM](http://farm6.static.flickr.com/5269/5691714222_771a341191.jpg)
In the next chapter, the redesign!