Stand up paddleboard (SUP) fin (Futures fin style)

thingiverse

I have a home built touring Standup Paddleboard (SUP). The fins / skegs are held in "Futures fin" style fin boxes. I have found that I break a lot of these fins and the price to replace them with genuine Futures Fins is painful. This is a simple medium sized fin, drawn in Solidworks with a simple curved shape, basic radius nose and chamfered trailing edge. Because they are so thin, it is difficult to print them in one go and later remove the supports. I split the fin on the midline creating a portsidefin and stbdsidefin (left and right halves), print one of each flat side down and then bond the two halves together. My current fins are simple PLA and bonded together with Cyanoacrylate adhesive. I have included the full fin (SUPfinMed.stl) if you want to try and print it in one go. Printing them in two halves also lets one mix the colours, if that appeals to you. These are not designed to be high performance, rather a simple cheap solution.