That's why I said there may be an easier way of doing it (There usually is). The reason the "Maker movement" is pushing so hard is that generally they don't have the tools at their disposal to do it the conventional way, so laser / SLS scanning straight to a format that you can then 3D print from is Ideal...... you dont need to be able to Model correctly, you can just scan it - print it - paint it etc.... It all looks great, until you try and put it all together, then, generally they come knocking at an engineers door to do it properly if its a precision component. I use Laser scanning / CMM to give me something to work to, but its just a dumb solid, I then create a parametric 3d model if you need to be able to change anything. 3D Cad, reverse engineering, designing new stuff etc is what I do as a day job, have done for years for Most of the automotive OEMs and consultancies (Including Caterham / Cosworth on the CSR200/250 program) ;) so if thats what the OP wants then I`m happy to discuss it. Cheers Dom