We are looking for someone in Missouri that makes compressed earth blocks. Yes I know we can do it ourselves, no need to provide links to the open source machine. I've spent most of my lunch break online looking and so far only have the name of a guy outside of kansas city, but he has an unlisted number.
I thought the open source machine was a bit pricey for what you get. Have you looked at Ferncometal.com? Their hydraulic units are VERY affordable. Nothing like the higher end (commercial use) units that you will find at adobemachines.com or aectceb.com. However, those sites do have some very good information on the topic.