Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

First of all you have made an excellent article !

regarding a sophisticated impeller/fan . There a lot of activity / enthusiasts that are building at home made 3D printers (also there is a group on yahoo). Also are available commercial services for this. On a such a printer can be made this impeller fairly easy . Also I am interested to participate on this "improvement" since I was planning for a long time ago to build a spray etcher...
Regards,
Daniel