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  1. #1

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    Paint in Composite Wing Hinge lines..how to remove??

    Hello Experts, Ineed your wisdom!

    Irecently had an all-composite jet painted. When Igot it it was gelcoat white, and I had it primered and painted with PPG. My problem is, now, after painting, the paint settled in the "live" hinge lines that were cut by the fatory and now I have two issues:

    1. The control surfaces are stiff.
    2. The paint will eventually crack and peel from these hi-flex areas.

    Question:What is the best way to carefully and accurately remove the paint from these areas?My idea was to set up a jig and use a straight edge and a Dremel tool with the router base to rout the paint out. However, I'm hesitant to get a Dremel tool so close to this wing, for fear of damage. Is there a better, SMARTERway?

    Thanks in advance!!

  2. #2
    SCALECRAFT's Avatar
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    RE: Paint in Composite Wing Hinge lines..how to remove??

    I would 600 wet sand it away. Very carefully.

    If it is very thick use 400. And don't use that guy again.
    Steve

  3. #3
    dbsonic's Avatar
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    RE: Paint in Composite Wing Hinge lines..how to remove??

    You might try a triangle file with a fine tooth to it. And carefully file out the paint but dont cut into the kevlar/nylon hinge material. This is typically how you manually create live hinges in a diy kevlar live hinge layup.
    P-40 Brotherhood #112

  4. #4

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    RE: Paint in Composite Wing Hinge lines..how to remove??

    dbsonic has got it right.  Clean it out with a triangle file.


  5. #5

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    RE: Paint in Composite Wing Hinge lines..how to remove??

    Thanks for the great ideas! I like the triangle file idea....

  6. #6
    vicman's Avatar
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    RE: Paint in Composite Wing Hinge lines..how to remove??

    You might want to scribe a line before hitting it with the file.
    A guy who used to live on this site and now is rarely here due to the "upgrade".
    Most likely fading away till the My Forums is fixed. Too bad.


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