 JB Weld Plastic Bonder, PSA - I'm a fan |
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| DennisV |
 Jan 9 2026, 07:49 AM
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Senior Member  Group: Members Posts: 830 Joined: 8-August 20 From: Santa Rosa, CA Member No.: 24,575 Region Association: Northern California 
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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.  |
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| porschetub |
Jan 9 2026, 07:16 PM
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Advanced Member Group: Members Posts: 4,999 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
None better ,I got the first starter kit like 18 plus years ago when there was the first distributor in my country ,I sold the guy a porsche part to him and he sent me a starter kit for free .
I'am super fussy when prepping to repair, structural plastics done with the 2 parts being roughed with medium sandpaper to "key" the epoxy to the plastic parts you are joining,I always leave this product 24hrs to fully set . I have repaired a lot of NLA parts and been real happy ,that's my take on it ,cheers |
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Posts in this topic
DennisV JB Weld Plastic Bonder Jan 9 2026, 07:49 AM
tygaboy :agree: I've had good luck with JB Weld produc... Jan 9 2026, 08:20 AM Chris H. :agree: I was able to fill a hole in a plastic int... Jan 9 2026, 08:41 AM friethmiller Yes, this is good stuff. I used JB weld, fibergla... Jan 9 2026, 09:05 AM Chad911sc I second the plastic welder….
The epoxy’s work... Jan 9 2026, 09:36 AM Artfrombama Wear gloves!
That stuff is great on plastic bu... Jan 9 2026, 12:20 PM scrz914 I just used the JB Weld 2 part epoxy putty for a s... Jan 9 2026, 12:28 PM Justinp71 Yea the plastic bonder is great. Also works to bon... Jan 9 2026, 04:19 PM Ninja I've got EVERYONE beat with a J-B weld repair.... Jan 9 2026, 06:09 PM
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