I've started pushing the reprap idea in the Moon Society. I recommend that your group present the idea at a meeting of the Houston Chapter.
"The Houston Chapter will host its next meeting in the meeting room at the Freeman Branch Library in Clear Lake (Note: New location!) on Monday, July 28, 2008. The room is booked beginning at 6:30 p.m.; meeting begins at 7:00 p.m. and will conclude by 8:45 p.m. (when the library closes). All members, guests, and interested visitors are welcome to attend. Expect to see a report from members attending ISDC 2008 in Washington DC and some lively discussion afterwards."
Future chapter meetings and directions will be listed at the following site as they are scheduled.
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www.moonsociety.org]
I recommend you talk to Vik Olliver as he can help you immensely with talking points. Hopefully this will snag you additional members.