Open Source Ecology is gradually evolving their process for open source engineering. This latest installment is a Google Doc that anyone can jump in and view/edit. They’ve posted several questions so all you have to do is comment. You can also download the CAD files and a viewer if you don’t have anything to open them with at the blog post. The wiki page for the backhoe is here.
Help OSE Refine The Design Of Their Backhoe