Fin Guides

The 3D Printed Fin Guides designed and sold by Black Aero are a perfect tool for aligning fins for all of your rockets. The Fin Guides were originally designed as I was sick of pasting a template onto a foam board and hoping the fins on my rocket were straight.

Below is a video showing you the many uses of the Black Aero Fin Guides.


Currently, Black Aero is producing Fin Guides that suit 38mm and 54mm air frames, thin walled or regular tubing. As fin thickness can vary the Fin Guides are stepped to provide you with the best fit for your rocket. Below are the step sizes according to the tubing diameter:

38mm : 1/16″ and 3/32″

54mm : 3/32″ and 1/8″