The Little Digger

Update: After hearing about the arm joint getting broken while being played with, I have modified the design to make it stronger. I increased the size of the connecting rods substantially. I adjusted the elbow joint so that it can fold completely. And I enclosed the joints to keep them from sliding up and binding. I have printed the new version and it works quite well as shown in the first two pics. It is the "Little Digger V2" file. My little "Iron Man" from the first video has been testing it. V2 video here: http://www.youtube.com/watch?v=0RYpjmRyl90

I haven't tried scaling this yet. The tolerances would scale as well, so I am not sure how well that would work.

End of Update.........

I wanted to make a fun toy for my kids for christmas, so I came up with this!

This is a pre-assembled excavator called the 'Little Digger'. The arm and bucket have 3 moving joints. The base rotates for Real digging action and the wheels turn. All moving parts have been desi