JB Weld Plastic Bonder, PSA - I'm a fan Options

[DennisV]

I don't know about you, but I've had very limited success in repairing broken plastics. I've tried a lot of variations ranging from household super glue to 2-part speciality plastic products with activators. They rarely withstand any force applied. Yet I keep trying.

This week I happened upon J-B Weld Plastic Bonder. I used it on two different components of the fresh air blower. The black plastic tabs of the housing, which I think is phenolic resin. Also some areas where the fan blades attach to the cage, which I think is probably Nylon. I snapped a plastic spoon to have a pointed tip to apply it with. I actually found it a benefit that it gets tacky pretty quickly.

After 8 hours, both seem quite secure. I had first tried Loctite plastic bond and it failed with the slightest of pressure. We'll see how they do long term, and if the tabs will remain when I try to attach the clips.

[Ninja]

I've got EVERYONE beat with a J-B weld repair...

A friend of mine with zero money had a mid 90s FWD Toyota Celica with a severely blown head gasket.

It was MISSING a chunk of aluminum between two cylinders. His daughter had driven in in an overheated condition until it just would start anymore...

Used engines were too expensive and the junkyards would not sell heads off of them...

Using J-B weld super duty metal epoxy, a bead blaster, wax paper/glass pane/heavy weight and hand filling I built up the trough, "dremeled" it into submission and fixed that head.

I gave zero warranty, it lasted 9 months until it died its final death.

But, I replaced missing material between two combustion chambers with zero machining and it functioned for nearly 10,000 miles!

Done right it can work miracles...
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