Hi Mark, at the moment I am on version 5 of the pump body. I keep finding slight flaws and areas I can improve on, the latest is adding guide veins at both inlet/outlets. Also trying to keep the price down on manafacturing costs is another reason to keep adjusting the design, the original version cost over £80 from shapeway, I have it now down to just over £60 but that may have to change if this version doesn't stand up to full power testing.
I am in the middle of purchasing my own 3D printer so I may be able to bring the price down even more once I work out how to use it and how well the PLA or ABS stand up to tests.
I should have version 5 submitted for pre print report by the end of today and if all goes well and funds allow I shall have this printed up so can test with the newer motor and sealing arrangement.
So to be realistic, I cant really give a price just yet, but I really do hope I can knock these out, fully built for under £100 bearing in mind the cost of quality brushless motors and Raboesch props this may not be possible........Let's see how the development goes and take it a step at a time. Thanks for showing an interest in my attempts and is heartening that someone is willing to pay for it, just hope I can succeed.
Regards
Stewart