ikea hacker: Ivar loves Dolly (http://ikeahacker.blogspot.com/2010/01/ivar-loves-dolly.html)

I think I might try it for myself this weekend Ill post pics and a video if and when I do.

I don't think I've see a square-tracked dolly before. Interesting. There are also plans on the Digital juice website, from which I built mine described here:

Be A Maker Robert Kerner’s Blog (http://robertkerner.wordpress.com/2009/06/22/be-a-maker/)

As I mentioned in another one of your posts, the dolly works. It is certainly not elegant but it helped me understand what I really need in terms of camera movement.

Bob