You are going to want to feather out the hard edge(cracking gel) make your repairs, depending in severity your fillers might be actual re lamination of fiberglass or marglass (fiberglass reinforced bondo) then block smooth and straight, then prime(will show all sins lol)and if it is to your satisfaction finish with gel or paint to suit.


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Id say maybe a sixteenth to an eighth of an inch past the gel in some of the worse spots, so im assuming the fiberglass filler and ill be good? And should I flip the hull or can this be done with it on the trailer? Also when you say feather the edges what exactly do you mean.

Fat fingered from the phone-  Corey

Id say maybe a sixteenth to an eighth of an inch past the gel in some of the worse spots, so im assuming the fiberglass filler and ill be good? And should I flip the hull or can this be done with it on the trailer? Also when you say feather the edges what exactly do you mean.

Fat fingered from the phone-  Corey

Bondo likes to stick to a rough, jagged surface so don't pre sand. Chip off any loose gel and throw the butter to it.

Featheredge is a thin filler product that bridges the edge of Bondo to your surrounding area of repair. Bondo itself will only sand so thin.

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Feather edge is a product but in this case that is not what I was meaning. To feather means to sand the edge of the area to be fixed getting ride of the edge of the damage. Thus feathering out the damage to the good surface. You do this for a couple reasons one to reduce the amount of filler needed and to to get rid of the hard edge so your repair will not crack later on down the road.


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