Impeller

thingiverse

I posted a tutorial on this model back in 2002 on my website catiav5tutorialmanual.com, maybe someone out there saw it. I just started using DesignSpark Mechanical and have been very happy with normal design functions, but I wanted to put it to the test. This model ended up being 140mb (native) and behaves poorly with all the fillets but I only have 16gb of ram. I can create an .stl file of an assembly and that would have been easier, but in the old school of surfacing you don't know if you have a good surface unless you can get a fillet on every edge and I want to see how far I could take it. The model looks great and the print looks fantastic from a $150 printer. This only took a couple hours, not bad for a first attempt at a surfacing model on a free CAD system. Obviously this does not have a real airfoil, I simply visually copied an old orange stereolith model from 20+ years ago that I was given, it only had 2 fin sizes, I added a third. The fins are horizontal at the top, vertical at the bottom and sweep back as it goes around.