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  1. #1
    Join Date
    20th August 2014
    Location
    Montreal
    Posts
    78

    Decorative Fillets For HPRs

    Hello,

    I built one of Giant Leap Rocketry's kits last year (the Vertical Assault). During the construction, the fin area was left a bit messy. There aren't really any fillets and the over-wide fin slots were just filled in with a high-strength Loctite epoxy.

    Anyways, the rocket made a (relatively) good flight without paint and with that messy fin epoxy arrangment. Now I'm thinking of giving it a nice coat of paint and I've been trying to find something to make the fin-fillets.

    I'm looking for something plastic-y and easy (like, really easy) to sand. Rugged-ness isn't too much of a factor since it doesn't need to add any strength to the fins and I'm thinking I could apply a thin coat of epoxy after it has been shaped to hold it all together.

    Does anyone know a product that can do this?

    Thanks

    Chief Designer of the Aurelius - Won 2nd Place, 2016 IREC Basic Category
    Chief Designer of the Arcturus - Won 2nd Place, SDL Payload Challenge, 2015 IREC

    "Don't worry 'bout it!" - Space Concordia
    "A new rocket is pretty, but a flown rocket has character!" - Handeman

  2. #2
    Join Date
    23rd January 2009
    Location
    mostly Wichita, KS
    Posts
    1,401
    http://www.aircraftspruce.com/catalo...s/superfil.php

    This is just the ticket.


  3. #3
    Join Date
    23rd July 2011
    Location
    Butte, MT
    Posts
    1,999
    The problem might be getting something to stick. I would sand your current surface with rough sandpaper 80 grit. Then I'd use epoxy with microballoons to fill your fillets.
    Steve Shannon
    L3CC, TAP, Director, Tripoli Rocketry Association

  4. #4
    Join Date
    20th February 2009
    Location
    Cayuga, Indiana
    Posts
    12,737
    Quote Originally Posted by llickteig1 View Post
    Lance is right, SuperFil is a good option since you already have epoxy in place and their won't be any significant joint flex.
    L3, TRA #11847
    Tripoli Indiana #132
    Tripoli Central Illinois #59
    Central Illinois Aerospace (NAR) #527
    Chicago Rocket Mafia, "Big Bucks" Dixon
    ___________________________________

    Quiet little voices creep into my head. -- We Were Promised Jetpacks

  5. #5
    Join Date
    20th August 2014
    Location
    Montreal
    Posts
    78
    Quote Originally Posted by dixontj93060 View Post
    Lance is right, SuperFil is a good option since you already have epoxy in place and their won't be any significant joint flex.
    Alright. I'll give it a try. It's too late for a build thread but I'll make sure to give you guys a painting thread. I want to make this rocket beautiful!

    Chief Designer of the Aurelius - Won 2nd Place, 2016 IREC Basic Category
    Chief Designer of the Arcturus - Won 2nd Place, SDL Payload Challenge, 2015 IREC

    "Don't worry 'bout it!" - Space Concordia
    "A new rocket is pretty, but a flown rocket has character!" - Handeman

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