4-Legged Robot Printed on Fab@Home
Just wanted to share a print I recently did on the Fab@Home. For the build material, I used FabEpoxy, which is a material made for Fab@Home by Kraftmark (http://www.kraftmark.biz). The material is great for printing stiff parts. FabEpoxy's work life is about three hours once the two parts are mixed together, and it takes about a day or two to fully cure (a lamp speeds this along).
I printed the body and four legs. This robot was recently picked-up by the Fabaloo blog.
Here's a video of one of the legs printing: http://www.youtube.com/user/fabathome#p/a/u/0/l-lixp5nOcU
The control circuitry slips into a cavity on the top; this was a custom control board our lab developed, but you could use any off-the-shelf board. I also had to print small jigs (I made these on an Objet printer) to mount the servos to the robot body. Additionally, I modifed each servo by adding a second ball bearing on the non-driven side so that the motor output shaft could be attached to the robot on both sides of the servo; this modification effectively made the servo act as the mechanical linkage to the robot body. If you would like more information, please let me know.