The 3D printers seem so slow. They must have hundreds of them running all the time to keep up.
“The 3D printers seem so slow.”
There ways to dramatically speed them up. Just by picking a larger nozzle size and some slicer setting tweaks you could print those fins 10x faster than the out of the box hobby settings.
If your doing it right, the printer is only to make templates for molds. Now with molds you can cast the fins with resins or aluminum.