Over the last year I have received numerous requests to make my $30 steadicam out of pvc rather than cast iron. So this video was my answer to those requests. I must say the the pvc version is a few pounds lighter, and it performed pretty well. I think the cast iron version is perhaps a little more stable, but considering the weight savings, it might be worth it.
This video pits plastic vs metal. Judge for yourself which version is better. To learn how to make your own version, click on the annotation i provide towards the beginning of the video.