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12-04-2019 03:37 AM  11 days ago
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SkySurfer

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usa

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JB Weld repair
Has anyone ever used JB weld to repair a striped screw hole? Basically fill the hole with epoxy, let cure, then drill and tap. Does this work?
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12-04-2019 04:42 AM  11 days ago
banshee rider

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Phoenix AZ.

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I havent filled a hole that was completely stripped out and tried to tap it
but I have filled three head bolts holes on a engine that were about half stripped and bolted the head down on while the JB weld was still soft and it worked after letting it set overnight

It was actually hard to get the bolts out 6/8 months later

I think you can do it depending on how critical the bolt is
ageing is manditory maturity is optional
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12-04-2019 01:17 PM  11 days ago
JuanRodriguez

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The Villages, Florida

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In my opinion, that will not work. The minute you put any kid of torque on the JB threads , they will pull out .
Best bet is to tap the stripped hole to the next size thread . For example , if it’s 3 mm , tap to 3.5 mm . You can also substitute standard size bolts/thread sizes to fine tune the size that best suits your needs....
Been there, done that and old enough to know better.....
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12-04-2019 01:45 PM  11 days ago
lt1pwr

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Douglasville, GA

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SkySurfer JB Weld repair
Has anyone ever used JB weld to repair a striped screw hole? Basically fill the hole with epoxy, let cure, then drill and tap. Does this work?
I used this method on my Hughes 500 to repair the horizontal part of the T tail that separated during flight. I used a slow curing epoxy and thread forming screws for plastic. These specialty screws require a specific size drill bit. The fix held the tail securely and there were no more issues. Both the screws and drill bit were purchased from McMaster-Carr.
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12-04-2019 04:21 PM  11 days ago
dgoss999

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UK - Lancashire

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I would use Helicoil inserts or similar to repair the tapped hole rather than glue!"Believe none of what you hear, and only half of what you see." • Benjamin Franklin
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12-04-2019 06:05 PM  11 days ago
SkySurfer

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usa

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I tried to drill and tap it today. Needless, to say it didn’t work. So I tapped it to 4mm instead. I was using a machine screw with a fine thread. Maybe a more course thread would of worked better.
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12-04-2019 06:15 PM  11 days ago
SkySurfer

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The only reason I tried it. I saw someone on here jb weld there ball links into a swash plate with to big holes, yikes!
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12-05-2019 01:29 AM  10 days ago
JuanRodriguez

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The Villages, Florida

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SkySurfer I tried to drill and tap it today. Needless, to say it didn’t work. So I tapped it to 4mm instead. I was using a machine screw with a fine thread. Maybe a more course thread would of worked better.
Just as I suspected.....😉

Tapping to a larger thread size or using a helicoil type of insert (if you have enough surrounding material) is the way to go for sure .....
Been there, done that and old enough to know better.....
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