zoomkat:
Would be nice to publish the arm frame plans in a pdf format which could be printed out on standard printer paper (larger parts might have to be split between two sheets of paper). I like the wood arm frame as wood can be easily worked with simple tools. 2'x2' sheets of 5.2mm lauan plywood are available at the US home improvement stores for ~$3.
Yes, our goal is to make a cheap and easy build robot arm. I have sent you a message about the pdf file.