Surfboard Future Fin fillers
thingiverse
These are designed for future fin box to fill in empty fin boxes this was one of my first projects ever and used this to try and build upon my knowledge of fusion360 feel free to use and these work great
Download Model from thingiverse
With this file you will be able to print Surfboard Future Fin fillers with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Surfboard Future Fin fillers.