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Thread: HOW TO: Install F shields in front fenders

  1. #1
    Senior Member MacGyver's Avatar
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    HOW TO: Install F shields in front fenders

    About a year ago there was a post asking how to install their F shields indented in there fiberglass fenders.

    I installed one of mine yesterday and thought I would share the process.

    Before you do any cutting. plan where you will be placing your shield and determine if their is enough thickness in the fiberglass. In my case I added a few layers more fiberglass to the back side of the fender where the shield would be. This will keep the integrity to the fender and not cause a weak area.

    Mark the area that needs to be indented with a fat magic marker where the shield would be installed. By using a fat magic marker you will be making the cut line slightly larger than the shield. I used an air die grinder with a rounded burr cutter. I started by cutting around the entire perimeter. Until I achieved the same depth all the way around. Which was .115 of an inch. This was the total measurement of the shield itself along with the mounting material combined.
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  2. #2
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    Re: HOW TO: Install F shields in front fenders

    This is the type of bit I used on the air grinder. It worked well and didn't leave any loose strands of fiberglass.
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    Re: HOW TO: Install F shields in front fenders

    In order to achieve the same uniform depth. I used a trim router to cut away the center area.
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    Re: HOW TO: Install F shields in front fenders

    After cleaning up all the dust. This is what I ended up with.
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    Re: HOW TO: Install F shields in front fenders

    After some hand sanding I applied a little finishing glaze around the edges to fill in deep scratch marks and pin holes in the raw fiberglass. I then smoothed it all down with some fine paper. Since my shields do not have studs like the OEM ones have. I will attach them semi permanently with a sheet of 3M VHB after the car is painted.

  6. #6
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    Re: HOW TO: Install F shields in front fenders

    Hard to tell by the photograph but the shield now fits flush with the fender. OEM ones actually stick out a little but I prefer them to fit flush with the body.
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    Re: HOW TO: Install F shields in front fenders

    Nice write up,looks a good job. I think a recessed metal one look so much
    Better than the resin versions

    For what it's worth i did a similar thing with the bonnet badge, and looks good flush too, oem always looked a bit high to me

  8. #8

    Re: HOW TO: Install F shields in front fenders

    Thanks for the tips, Sean.

    Nice work.

  9. #9
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    Re: HOW TO: Install F shields in front fenders

    Nice job with the install and the write up. How long did this take you do finish one side but more importantly how much dust did this create... ;D

  10. #10
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    Re: HOW TO: Install F shields in front fenders

    Quote Originally Posted by Ferrari Berlinetta
    Nice job with the install and the write up. How long did this take you do finish one side but more importantly how much dust did this create... ;D
    Well, The situation is that it is very hot down here in Florida. Currently I am working in the garage with the door shut and ac blowing in from a duct that I tapped into the central air from the house. Their is about a 1/4 inch of dust on everything in the garage. So I have to live with the dust or open the door and pass out due to the heat. I think I'll live with the dust for a while.

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