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Is this dumb?

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  • #16
    If you're gonna use foam, cut the shape slightly large, then go over it with a heat gun and fill as necessary.

    Layer it with thinned out elmer's glue or light oil based lacquer/shellac before layering on the FG. Bond promoter also works.

    You'll need to put plates in where you intend to mount it. Most of the force on a spoiler is down (if designed properly), but some is back as well... the torsional load can break single layers of FG.

    Ell brackets will support the legs to the ends just fine. Layer in a sheet of FG first, put the bracket over it before its' dry and then layer more FG over it.

    The biggest thing is hollowing out a space in the bottom, layering in 2-3 layers of FG, then laying in the plates (pre-drilled/threaded) and laying 2-3 more layers over it to make an "envelope" so that the plates are an integral part with the spoiler. You can also just make a very thick bottom layer on the feet and install Tee nuts using FG adhesive.

    Honestly, if you're serious about making a spoiler, you're almost better off using veneers and framing it like those old 3D puzzle dinosaurs.

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    • #17
      Small update after 3 fails ive decided to make a fg mold then use a poly resin for the cast. Any thoughts?
      ReD 91 L FIRSTiva

      92 silver 5spd with some boost! Kratos

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      • #18
        i used paper mache before over cardboard to make bumpers and side skirts and then fiber-glassed over then removed inner of paper and cardboards maybe it will give u some ideas

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        • #19
          For the shogun , I used rigid expending foam , then automotive bondo , then primer , then clear , then for the mold - gelcoat then FG.



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          • #20
            You could also use bondo.
            That might let you do some last minute
            adjustments and see it a different way before
            committing to your final design.
            http://www.youtube.com/watch?v=s8SilV257aM

            1999 SVT Lightning #1212
            1993 tube chassis Festiva 351w (shooting for the 9s)
            1980 Maples jet boat 455 olds
            1991 Chevy custom one ton dually
            1988 Mustang N/A 385 w/doug nash 9.88@137 (sold)
            2001 GSXR-1000 turbo lowered & extended (sold)
            1988 S-10 468 BBC lowered & body dropped (sold)
            on & on

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            • #21
              Re: Is this dumb?

              Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.
              Last edited by DriverOne; 11-12-2012, 12:38 AM.
              In love with a MadScientist!:thumbright:
              There's a fine line between breathtaking ingenuity and "That's the stupidest thing I've ever seen!"

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