“I thought about and researched what bag material would be the best to use and what would be the easiest way to fill it with minimal help. Most of what I saw on the internet for earthbag building was a large group of hippies with coffee cans filling earthbags (in my opinion) very slowly or people using various stands to hold open and fill individual bags and place them one at a time.
Neither one of these options would work for me as I have only a few people helping me and the idea of lifting and placing individual bags for a wall that will be 130′ long x 2′ wide x 10′ tall seemed impossible. I decided to go with woven polypropylene rolls which I got in four 1000′ rolls. I had to make my own invention for loading up to 70′ of tubing on, holding it up for filling and releasing the filled bag into a form. I will be a bit vague as to the exact specs for building the thing as I may offer a set of plans for sale if there is any interest.”
More at the source: Tree Based Permaculture
Here’s an earthbag filling machine design from a previous story: http://www.naturalbuildingblog.com/hyperadobe-quick-wall-machine/