Fins

Fins

Fins guide a rocket once it is moving fast enough for the air moving across the fin surfaces to steer the rocket.  Fins can be made of balsa wood, plywood, or plastic, and can be mounted on the surface of the airframe, or through the wall of the airframe with a tab secured to the motor mount inside the airframe.  Fins can also take the form of tube fins or ring fins, which also provide guidance, although they produce more drag than traditional fins.

  • Scale Goblin fins

    Goblin Upscale Fin and CR Set

    Rocketry Works

    $11.99
    These 1/8 inch birch plywood upscale fins of the classic Estes Goblin. Unless otherwise specified, sizes include through-the-wall fin tabs.
    RW-FIN-GOBLIN
    $11.99
  • Upscale Alpha 3 fins for 29mm motor mount in BT-70 airframe BT-70 Alpha fins in an upscale Alpha 3 (sold separately)

    Plywood Swept Fins TTW fits 29mm in BT-70 (Set of 3)

    Rocketry Works

    $8.99
    Save yourself the trouble of cutting your own plywood fins with thee sturdy through-the-wall (TTW) 1/8 inch thick laser cut plywood fins. The swept shape fins are an upscale clone of the Estes Maxi Alpha 3 fins to fit a 29mm motor mount. Strong plywood...
    RW-29MM-BT-70-TTW-3MM-SWEPT-FIN
    $8.99
  • Snarky Through-the-wall fins fit 29mm motor mount in 56mm (BT-70) tube Snarky surface mount plywood fins

    Snarky Fin Upgrade 1/8 inch Plywood

    Rocketry Works

    $14.99
    These 1/8 inch birch plywood fins and centering rings for the Dynastar Snarky replace the stock balsa fins and centering rings. Options include a choice of 24mm centering rings or 29mm motor mount, surface mount plywood fins to match the stock balsa...
    RW-FIN-SNARKY-PLY
    $14.99
  • Mean Machine plywood upgrade fins and centering rings for 29mm Heavy wall motor tube

    Mean Machine Fin Upgrade 1/8 inch Plywood Set of 4

    Rocketry Works

    $4.99
    These 1/8 inch birch plywood fins and centering rings for the Estes Mean Machine replace the stock balsa fins and centering rings, but are designed for mounting through-the-wall to fit a 29mm heavy wall motor tube inside the stock BT-60 airframe. Product...
    RW-FIN-MEAN-MACHINE-PLY
    $4.99
  • Set of 3 Star Orbiter plywood fins with 2 centering rings

    Star Orbiter Fin Upgrade 1/8 inch Plywood Set of 3

    Rocketry Works

    $3.99
    These 1/8 inch birch plywood fins and centering rings for the Estes Star Orbiter replace the stock balsa fins and centering rings.  These centering rings and fin tabs fit either the Estes 29mm motor tubing or LOC 29mm motor tubing and the stock...
    RW-FIN-STAR-ORBITER-PLY
    $3.99
  • Doorknob Plywood Fin Upgrade Set of 4 Fin can unit assembled without glue for test fitting.

    Doorknob Plywood Fin Upgrade Set of 4

    Rocketry Works

    $14.99
    These 1/8 inch thick plywood replacement fins for the Estes Doorknob kit are a great option to improve your build strength and durability over the stock multi-part balsa fins that can be damaged in transit or during assembly.  Laser cut to the...
    RW-FIN-DOORKNOB-PLY-3MM
    $14.99
  • Rocketry Works plywood Der Big Red Max upgrade set, including 2 or 3 centering ring options. Compared to the stock multi-part fin assembly requirements shown on the right, the Rocketry Works plywood upgrade set is simple, clean and ready to assemble.

    Der Big Red Max Plywood Fin Upgrade Set of 3

    Rocketry Works

    $14.99
    NOTE: As of April 2023, the ongoing Baltic birch supply chain disruptions that resulted from the US sanctions on Russia prevent us from sourcing plywood of sufficient consistency to reliably produce this large fin.  We are working to source...
    RW-FIN-BIG-RED-MAX-PLY-3MM
    $14.99
  • Custom Plywood Fins 1/8 Inch Thick Plywood through the wall fin for 29mm motor tube in BT-80 body tube

    Custom Plywood Fins 1/8 Inch Thick

    Rocketry Works

    $4.99
    Rocketry Works can cut your design into 1/8 inch thick plywood fins for you!  Simply upload your fin pattern, and we can cut your fins to your specifications!    Vector artwork files are best delivered in Lighburn .lbrn or Adobe...
    RW-CUSTOM-FIN-PLY-1-8
    $4.99
  • Custom Plywood Fins 1/4 Inch Thick Plywood through the wall fin for 29mm motor tube in BT-80 body tube

    Custom Plywood Fins 1/4 Inch Thick

    Rocketry Works

    $7.88
    Rocketry Works can cut your design into 1/4 inch thick plywood fins for you!  Simply upload your fin pattern, and we can cut your fins to your specifications!    Vector artwork files are best delivered in Lighburn .lbrn or Adobe...
    RW-CUSTOM-FIN-PLY-1-4
    $7.88
  • Custom Plywood Fins 3/8 Inch Thick Plywood through the wall fin for 29mm motor tube in BT-80 body tube

    Custom Plywood Fins 3/8 Inch Thick

    Rocketry Works

    $12.80
    Rocketry Works can cut your design into 3/8 inch thick plywood fins for you!  Simply upload your fin pattern, and we can cut your fins to your specifications!    Vector artwork files are best delivered in Lighburn .lbrn or Adobe...
    RW-CUSTOM-FIN-PLY-3-8
    $12.80
  • Super Big Bertha plywood fins for 75mm (3 inch) airframe and 54mm motor tube Super Big Bertha plywood fins for 98mm (3.9 inch) airframe and 54mm motor tube

    Super Big Bertha Upscale Fins and Centering Rings

    Rocketry Works

    $11.98
    These plywood through-the-wall fins and centering rings are upscale versions of the original Estes Big Bertha. Fin thickness ranges from 1/8 inch birch plywood for the BT-70 and 80 versions, to 1/4 inch birch plywood for the 3 and 4 inch versions, and...
    RW-SBB-UPSCALE-SET
    $11.98