Durable Plastic Repair Epoxy Recommendation Request

[GrantOv]

I have a couple of heating duct parts that have broken corners etc. I was wondering what a good recommendation would be for strong epoxy (perhaps 2 part) that I should look to buy at Amazon or one of the big box stores to fix and reinforce? In other words - It isn't visible but looking for something that is very durable to reattach some broken plastic bits. Any suggestions?

 

[giantpune]

Any of the 2 part ones in the paint section at lowes or home depot will be strong. JB weld, gorilla, loctite all make some.

The next step up for plastic repair is one of those little kits with the hot metal rods. It heats them up and you press them into the plastic. It melts its path in and you stitch the plastic back. It works with thermoplastic, but not with thermoset plastic. I'm not sure which type was used in our heating ducts. If they are thermoplastic, that's what I'd use.

 

[NG8264723]

I keep a container of panel adhesive in a panel adhesive gun with a bunch of tips. I use it for everything. It works awesome. I also have the eastwood stapler and sometimes combine the two. I also use thin copper wire and wrap broken posts and some things and then use panel adhesive on top of it

 

[Stanglover]

Any of the 2 part ones in the paint section at lowes or home depot will be strong. JB weld, gorilla, loctite all make some.

The next step up for plastic repair is one of those little kits with the hot metal rods. It heats them up and you press them into the plastic. It melts its path in and you stitch the plastic back. It works with thermoplastic, but not with thermoset plastic. I'm not sure which type was used in our heating ducts. If they are thermoplastic, that's what I'd use.

Those ducts will be either ABS or PP. Both are weldable. ABS can easily be glued with ABS plumbers pipe glue. Usually yellow, but black may also be available. PP is NOT able to be glued. I always weld PP.

 

[pedstagn71]

A good quality local Bodyshop should have a plastic welder. They may fix it for little of nothing

 

[Rickmustang]

Q Bond

 

[MikeGriese]

A really good place to look for automotive products like this is 3M. They make tons (literally) of stuff for the automotive industry. Other excellent resources are businesses that supply body shops with products. They often have open enrollment education sessions to teach about and demonstrate products. They may even be able to provide free small samples that would be plenty for your application.

 

[TheDude]

If you can't see the repair and you're using epoxy, I like using a little fiber glass. For very small or detailed spots, even just adding some fabric like a small swatch of flannel or other fabric laid into the repair can add tons of strength and is very easy to work with. You don't need fiber glass resin or anything just use regular epoxy with the glass or fabric and it'll be strong as hell.