Actually, i already have a working prototype as we speak. I just havent let anyone see it yet nor plan to until i finish it . I am working out some kinks i have with it but i have high hopes to have a finished design by the end of this year as long as i have enough money to do so . I have spent quite a bit on different designs. You can check out my postings once i finish it i will post on here a page then i will be doing some videos on youtube and dtube of how to operate it and such . I will probably sell some and get feedback from people then do two versions one for here in the U.S where most people have access to water and one for overseas that will be a little labor intensive. The end goal is to be able to have one that is portable and cheap enough to mass produce that i can send overseas where the clean water sources are scarce above ground but they have aquifers that has clean water underground and end that situation maybe help out someone . And one i can send here in the U.S you can just hook into a regular water hose or trash pump to dig with .