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Re: What should I use to build up an edge on fiberglass?
[Re: VITC_GTX]
#1122086
11/26/11 10:19 PM
11/26/11 10:19 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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For a 1/2" I would just use light weight roll mat fiberglass and resin, 2" wide... either filler product
Last edited by MR_P_BODY; 11/26/11 10:23 PM.
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Re: What should I use to build up an edge on fiberglass?
[Re: MR_P_BODY]
#1122088
11/27/11 12:36 AM
11/27/11 12:36 AM
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Joined: Jan 2004
Posts: 27,347 Today? Who Knows?
1_WILD_RT
Management Trainee
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Management Trainee
Joined: Jan 2004
Posts: 27,347
Today? Who Knows?
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I agree use fiberglass mat.. The way I would do it is first grind the backside of the fender edge to roughen it & expose some matting to promote a good bond... Then use thin cardboard like a cereal box is made of...First I use clear packing tape to seal the cardboard... Then lay it over the front face of the fender & mark the shape on the cardboard, cut along the line then tape the cardboard so it's edge is butted to the fender edge, this will create a small step the thickness of the cardboard in the soon to be laid new fiberglass, I'll explain why later.. Now working from the backside, cut a 1.5" wide strip of fiberglass mat, not cloth, mat... mix up some resin & activator drip the strip of fiberglass cloth in the resin & brush a layer of resin on the cardboard mold & the backside of the fender.. Then lay the fiberglass cloth & brush it into place, let it set up a few hours then apply a second layer of cloth to the back side, same deal soak the cloth in resin & brush some on the area before applying the cloth.... let it set up for a day, strip the cardboard then brush a good heavy layer of resin on the front side to fill the void the cardboard left.. This method makes sure no cloth protrudes from the finished fender surface.. You can build the fiberglass resin up to the point no plastic filler is needed..
"The Armies of our ancestors were lucky, in that they were not trailed by a second army of pencil pushers."
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Re: What should I use to build up an edge on fiberglass?
[Re: 1_WILD_RT]
#1122089
11/27/11 01:23 AM
11/27/11 01:23 AM
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Joined: Dec 2007
Posts: 1,572 Jacksonville Florida
elitecustombody
pro stock
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pro stock
Joined: Dec 2007
Posts: 1,572
Jacksonville Florida
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Make sure to grind and bevel the edge from both sides,before laying up the cloth,so it doesn't show the ghost line in the finish later.Try to avoid using resin to build shape or fill voids.Without fibers,it becomes very brittle and will chip easy.I would recommend using epoxy resin,you can pick it up at any marine store.Use chopped strand cloth,not weave.If you have voids and low spots, you can fold the cloth a few times and cut it up,stir it up in resin and you have solid filler. Z-Grip is a good filler that doesn't cost $50,it's around $25-28 per gal.
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