Short Fin For Inflatable Stand-Up Paddleboard ISUP SUP
thingiverse
I had to go down a river with low water so I removed the center fin (my paddleboard has 2 shorter fins also) but the directional stability was terrible. This adds a fin which is half the height (you can get more clearance by shifting weight forward on the board) but gives you probably 80% of the directional stability. I printed with PETG, sanded with 400 grit, coated with thin CA, then wet-sanded again to 800 grit
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