Fiberglass finishing

 to save your self money on labor from the paintshop, sand as much as possible. You really have to sand it as much as possible. If you see ANY dimples or scratches, sand them out. This may take HOURS. If you want to know if ou think its smooth enough, feel your window on your car, compare that to your work. Joe

Sound Lab Audio

Owner

MECP First Class

Sanding the fiberglass as smooth as possable is a good start, usuially you can only get it so smooth though. After that put on a thin thin coat of bondo and then sand that. bondo sands a little easier than fiberglass and you can literally get it to sand as smooth as glass or ice or.. whatever. if its not perfect before painting ever little depression, or hole will be seen. even if covering with vynl you can see slight dips and depressions.

the use of polyester primer(i.e. feather fill, slick sand, poly primer) is a big time saver. you can sand the piece with 36 grit, then shoot it with polyester primer and it will even its self out quite well and get rid of the sanding marks. it also sands way easier than bodyfiller. once you sand it to a 120 or 220 grit, shoot a thin coat of poly primer or sealer primer over it and sand that to a 400 or 600 grit and your all ready to paint.