Water Rocket Gridfins
thingiverse
I wanted to 3D print fins for a large water rocket but I couldn't find fins witha large enough wingspan without prohibiting mass penalties. So I decided to make fins that would be mass efficient but still drag inducing, and I arrived at these gridfins. These fins are made for BIG water rockets, the one I am building is about 12 liters. You'll need to print the gridfin file four times for symmetry. Also, the ring may be slightly off size for your specific bottle. It is made to fit a 110mm 2L bottle. Be sure to try 'em out, and Happy rocketeering!
With this file you will be able to print Water Rocket Gridfins 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 Water Rocket Gridfins.