Fiber glass bonding advice

[cabforward]

I am needing a source for a bonding agent to mount 1963 avanti fenders and front clip. I also have a need to bond my hood hinge to the hood on my Packard Hawk. I am wondering what is recommended for this activity.

[PackardV8]

You're asking about two different materials. Fiberglass is it's own material and bonding is chemical. Bonding steel to steel requires welding.

jack vines

[bensherb]

Go to an auto body supply store and ask for "Corvette panel bonding agent". It's a special "bondo" like stuff made specificly for the job of grafting the upper surrounds to the fenders, and so on. It sort of looks like grey pasty resin mixed with chopped glass and bondo.

[swvalcon]

They use to use corvette bond. To day they use a 2 part epoxy bonding glue but you will need a special gun to use it. The auto parts place may have one to rent or loan. This is the way all the new big truck hoods are built or repaired today or any fiberglass parts that are built in pieces. About the same as the metal bonding glues.

[64V-K7]

I think you're looking for Fusor products for the fiberglass

https://www.lord.com/products-and-solutions/brands/fusor-repair-adhesives

[thunderations]

Not so anymore for steel. There are numerous chemical bonding agents for non structural steel body panels. GM has been "glueing" door hinges to door post for many years.

You're asking about two different materials. Fiberglass is it's own material and bonding is chemical. Bonding steel to steel requires welding.

jack vines

[cabforward]

The packard hawk hood hinge mount plate is also fiberglass that goes from one side to the other, all fiberglass. The riveted hinge bolt mounts are in good shape. I am talking about the full piece that is joined to the hood that has come separated from the hood. The previous owner looks to have tried to glue the part with bondo and it did not hold.
I was wanting to know what the older fiberglass parts require to attach them to another fiberglass part. I am not sure if the new corvette panels are made of the same type of glass and used something different.
I did see the squirt gun applicator that has 2 different materials and mixes at the point on the internet but was not sure if that is what is needed on the old glass.
I am beginning the sanding process on the packard hawk parts cleaning the old bondo off and wanted to be ready to mate them with the right stuff.
Thanks for any help.

[bezhawk]

Your local automotive paint supplier should carry this. If you are lucky, they might rent you the applicator gun. Even on steel, it is stronger than weld. On Fiberglass, it is perfect. Use the Vette Panel bond that was recommended earlier as a FILLER, not to structurally glue. Do not use any "bondo" type polyester fillers on any seam.

[studegary]

You're asking about two different materials. Fiberglass is it's own material and bonding is chemical. Bonding steel to steel requires welding.

jack vines

I guess that I am missing what you refer to as steel to steel in the OP question.

[bezhawk]

You're asking about two different materials. Fiberglass is it's own material and bonding is chemical. Bonding steel to steel requires welding.

jack vines

Packard Hawk Hoods are fiberglass. An interesting note is there is a copper screen imbedded into it for radio static suppression. There should be a contact to the firewall to ground it.

[jclary]

The packard hawk hood hinge mount plate is also fiberglass that goes from one side to the other, all fiberglass. The riveted hinge bolt mounts are in good shape. I am talking about the full piece that is joined to the hood that has come separated from the hood. The previous owner looks to have tried to glue the part with bondo and it did not hold.
I was wanting to know what the older fiberglass parts require to attach them to another fiberglass part. I am not sure if the new corvette panels are made of the same type of glass and used something different.
I did see the squirt gun applicator that has 2 different materials and mixes at the point on the internet but was not sure if that is what is needed on the old glass.
I am beginning the sanding process on the packard hawk parts cleaning the old bondo off and wanted to be ready to mate them with the right stuff.
Thanks for any help.

You have provided good info to illuminate what you are up against. If you could post some pics it could help some of our more experienced members in providing a good response. I have some experience but have not been in the business in over a decade. Most of my professional experience in dealing with fiberglass applications was in the industrial equipment business. I sold fiberglass chopper guns, spray applicators, pumps, pressure vessels, etc. My personal experience was much more backyard hobby level like patching boats, and some bodywork. My main caution to you is to follow the directions provided with the chemicals/materials you purchase and keep your work clean and free of contamination. Pay special attention to "pot-life" of your mixed materials, and cure times. Also, note that there are two different cure times. One is for when the material has set up long enough to begin to work with it, and the other longer time is for your final finish. The final finish time is when the material has set long enough for complete cure. That is when it has completed all the cure shrinkage over any lap or seam where any new portion of a repair. If you rush this part, it is possible for a line to form in your finish coat of paint along the repair.

Good luck with your projects. Hopefully, once completed, your biggest challenge will be relaxing the big grin etched across your face.

[cabforward]

The sides of the hood also has issues with some of the pipe stiffner showing and some of the hand laid glass and clothe cracking away due to rust. Looks like Packard used just plain steel uncoated which will rust. I will try to get pictures tomorrow.