JohnAbercrombie
Paddler
I recently had to re-install a skeg control box which had been factory glued in place, into a fiberglass kayak.
I grabbed two similar-looking products from my supply drawer and (luckily) did a quick test on each of them.
The two products:
Devcon Home Plastic Welder
JB Weld Plastic Bonder
The product I needed and used was the Devcon Methacrylate adhesive. Once you use it, you won't forget the characteristic smell. It sets quickly - there's only about 5 minutes working time. It's very aggressive and really inspires a lot of confidence in the bond quality. A friend re-bonded a hatch rim with methacrylate with good success.
The JB Weld Plastic Bonder product seems to be an epoxy, which in my cool shop didn't harden for hours was not fully hard-cured even 18 hours later. (The package advertised 30 minutes till sandable.)
Both products came in double parallel syringe dispensers, and both needed some wasted product before the two nozzles were dispensing equally.
Both have sealer tips for the nozzles; the Devcon is much better designed to prevent putting the sealer 'the wrong way round' and gluing it to the syringe.
You don't get much product for the money - bonding that skeg control box took a full dispenser of Devcon Plastic welder. Still, it's a job I want to last, so I don't mind the expense if it will do the job.
I grabbed two similar-looking products from my supply drawer and (luckily) did a quick test on each of them.
The two products:
Devcon Home Plastic Welder
JB Weld Plastic Bonder
The product I needed and used was the Devcon Methacrylate adhesive. Once you use it, you won't forget the characteristic smell. It sets quickly - there's only about 5 minutes working time. It's very aggressive and really inspires a lot of confidence in the bond quality. A friend re-bonded a hatch rim with methacrylate with good success.
The JB Weld Plastic Bonder product seems to be an epoxy, which in my cool shop didn't harden for hours was not fully hard-cured even 18 hours later. (The package advertised 30 minutes till sandable.)
Both products came in double parallel syringe dispensers, and both needed some wasted product before the two nozzles were dispensing equally.
Both have sealer tips for the nozzles; the Devcon is much better designed to prevent putting the sealer 'the wrong way round' and gluing it to the syringe.
You don't get much product for the money - bonding that skeg control box took a full dispenser of Devcon Plastic welder. Still, it's a job I want to last, so I don't mind the expense if it will do the job.