MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
Have you seen the videos in the description it shows a blade being printed and the print settings are in the instruction manual. I do ZERO post processing of the blades as I cannot stand spending my time sanding and making a mess. Like the other guys i've found the blades work really well, i've done some high speed testing (1700 rpm, 3x faster than the turbine will operate typically) and they hold up really well. You could improve the surface finish of the blades and see if it improves performance but at this scale I doubt it would make a difference, not one you could measure anyway...
PS take a look at the other makes... some great examples others have made with no other support but the drawings! I've attached the speed test data if you are interested.
Hope this helps, thanks Dan