In a kit you will have a pre measured can or bucket of resin.
How to fiberglass over sheet metal.
Clean the metal with some solvent and grind with a disc grinder to get all of the rust of and to roughen the surface then glass it using epoxy resin for a permanent bond.
Grind the area of the metal that will be getting fiberglass applied to it using an air grinder.
Lay the fiberglass.
The additional advantage of these techniques is added strength over a long period of time.
To apply the fiberglass reinforced filler place the needed amount of fiberglass to a mixing board.
The way gm did it in the old corvettes was to rivet a fiberglass bonding strip to the metal and then adhesively bond the fiberglass to the bonding strip.
The most common type of resin is polyester which sticks fine to itself and to the glass but doesn t stick very well to metal.
If you try to apply it over regular 80 grit scratches chances are it will pop right back off within a few months.
Mixing and applying the fiberglass 1.
How to fiberglass over metal step 1.
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Wipe the ground area of the metal clean with a rag and acetone.
The metal needs to be pretty rough or coarsely ground to make enough key or surface area for the fiberglass resin to bond to.
Add the hardener according to package instructions.
A metal mesh works well too provided fiberglass is applied to both sides.
May be a little old fashioned but depending what you are doing it still may be the way to go.
Follow the instructions on the epoxy.
One thing to keep in mind.
Usa chop strand matting.
How to bond fiberglass to metal.
I use a 36 60 grit scratch or heavier when bonding glass to metal or wood.
Gashog oct 5 2006 share post 9.
A large can or metal bowl will work but it should be of.
Having done that apply metal conditioner with a clean cloth and use a separate cloth to wipe it off before it dries.
Https amzn to 31ltknd epoxy resin.
This will prepare the surface of the metal for rust repair.
Rough up the metal surface with a piece of coarse grit sandpaper.
Measure an appropriate amount of resin in a metal container.
Roughing up the.
If bonding fiberglass gelcoat rough that up too.
Mix up a batch of the epoxy large enough to bond the fiberglass to the metal.