Ben,
The thread is clearly not about 3-D printed Nose Cones . . . Yet, that is where you took it. Clearly, talking about 3-D printed Nose Cones is not a fair comparison to 3-D Printed Fins.
QUOTE : "People need to think through their designs as many 3D printed parts have a severe weakness when manufactured incorrectly such as printing in the wrong orientation, too thin of walls, etc. 3D printing is an art, never assume that you know everything or your design will fail in a way that you never saw coming." END QUOTE:
What sources of public information are readily available to teach people how to safely make 3-D printed rocket fins up to, and including, Level 3?
How is the "correct orientation" determined and what sources of public information are readily available to teach people ?
By your own admission, in the last sentence of your quote, you seem to imply that 3-D printing is a less reliable method, with multiple failure modes possible . . . That, alone, should make it abundantly clear that, for most people, when it comes to 3-D printing HPR fins, the risks clearly outweigh the benefits, at this point in time !
Dave F.