Impeller
Description
I posted a tutorial of 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 140mg (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 (I have versions of that saved), 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 a old orange stereolith model from 20+ years ago 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.
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