Shaving side markers, whats the best method Options

[gtcelica94]

i wondering whats the best method,
the method i think i am going to do is just fiberglass it from the inside and fill it up on the out side with some everlast & dyna body filler.
but i think i heard that welding is the best method.
so if you have done this i would like to hear how ya did it

[Coomer]

Fiberglass actually bonds really well to metal. Just scuff it up a bit and it sticks really well.

However, the best way to shave sidemarkers is to weld a piece of metal in there, at least from what I've heard from a couple body shops. On my '88 Celica, we welded a piece of metal on the backside of each fender, and then drilled a bunch of small holes in the welded metal. Then we filled the area with some Bondo-Glass and sanded it down smooth.

The holes allow some body filler to get through and harden to lock the body filler into place...I know that my friend didn't do this when he shaved his door handles and a couple weeks later the Bondo cracked under the primer and you could see it. I know this probably isn't a concern, since fenders don't see the kind of stress and movement that a swinging, slamming car door does, but it never helps to do it the best way the first time.