Surfboard Fin (with winglets)
by mckoss, published
A working surfboard (wake-surf board, in this case) fin. Fitted with mounting tabs for RONIX surfboard.
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Early version of this fin broke off due to high side loads. I recommending printing at 100% infill. I also increased the base thickness so that side loads are transferred to the main body of the fin, rather than being all absorbed by the tabs.
Time to print at 100% infill (on Makerbot 2): 6 hours