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Old 29-05-2019, 17:55   #31
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Re: Fixing a stripped screw hole

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Originally Posted by geoff3nebel View Post
What is the diameter of the hole(s)?
I have used the plastic cord from a garden strimmer -it's tough, doesn't break down and it grips the screw like heck.
Epoxy as described above numerous times is probably the "right" way, but this is the "good enough" way (on land the traditional fix to loose door hinge screws is to put in a couple of toothpicks in the hole and break them off). As long as you don't think the slight enlarging of the hole has compromised waterproof integrity it will last years. If you do think core is exposed or something similar then the epoxy route...
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Old 29-05-2019, 18:36   #32
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Re: Fixing a stripped screw hole

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Epoxy as described above numerous times is probably the "right" way, ..
self tapping screws are pretty much NEVER the "right way" in a laminate much less a cored one.
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Old 30-05-2019, 09:10   #33
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Re: Fixing a stripped screw hole

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I would not re-drill. If you are not going to to need to remove the screws in the future simply clean thoroughly, dip the screws in thickened epoxy and lightly screw them back in. If you do want to remove them in the furture wipe the crew with Vaseline before diffing in the epoxy so that the joint will break.
Wipe the crew with Vaseline?
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Old 30-05-2019, 09:45   #34
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Re: Fixing a stripped screw hole

Epoxy will likely be enough. Or you could install "brass thread inserts" from the hardware store and use machine screws instead of wood screws. if your canvas hardware has replaceable screws or threaded version. The thread inserts require a bit bigger hole and are threaded inside . There are various versions of inserts; press in, tap threads and screw in etc. Have you considered pop rivets in lieu of the screws?
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Old 30-05-2019, 09:57   #35
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Re: Fixing a stripped screw hole

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Wipe the [s]crew with Vaseline?
The vaseline serves as a release agent. I had not heard of this before either but probably works if necessary to extract the screw at some later point. Epoxy can be tenacious stuff.
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Old 30-05-2019, 09:59   #36
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Re: Fixing a stripped screw hole

The problem with west system for this type of thing is accurately measuring tiny amounts. The problem with marine tex is also measuring the required five to one ratio. For this type of thing you can use any type of 1:1 ratio "hardware store" epoxy kit. The putty sticks that you break off and knead with your fingers work good (wear gloves)
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Old 30-05-2019, 10:16   #37
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Re: Fixing a stripped screw hole

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^^thinwater

From your article “The fastest way to attach light hardware to a cored deck is a self-tapping screw” - not sure I agree, click bond and the other good adhesive mounts would seem to me to be preferred both for ease/speed and for deck/core integrity.

It is certainly a ton easier than your above roofing nail/cloth/epoxy approach.

That's 'whole nuther' topic!


I love bonded stud systems, when applicable. When they work, I agree. However, most people would not chose that to install a bimini, for appearance reasons... though it would certainly be more secure.


There are at least 5 good ways to come at this.
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Old 30-05-2019, 10:19   #38
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Re: Fixing a stripped screw hole

After having some problems stowing the West System resin & hardener using the pumps, I now use plastic measuring spoons from the Dollar store to get the ratios right. Less wasteful when needed for small jobs too. The 1:1 products can also be quite convenient, and the stuff that automatically meters out in reusable tubes maybe the most convenient of all.
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Old 30-05-2019, 10:27   #39
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Re: Fixing a stripped screw hole

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That's 'whole nuther' topic!


I love bonded stud systems, when applicable. When they work, I agree. However, most people would not chose that to install a bimini, for appearance reasons... though it would certainly be more secure.


There are at least 5 good ways to come at this.
You mean more like 25, right? And I doubt the thread is finished yet.
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Old 03-06-2019, 07:04   #40
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Re: Fixing a stripped screw hole

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Originally Posted by Valmika View Post
I am guessing you have a Hunter. I hate to say it but I had the same problem with a hunter with undersized screws. I would use an epoxy but enlarge the hole (wider and deeper if you can) and epoxy a small teak dowel into it to screw into. Kinda like putting a matchstick in a stripped wood hole.
What he said. Epoxy and/or fiberglass doesn't want to expand, which you need for making room for, but still having engagement with, the threads.

Or, you could do what I did for our freezer lid catch, and make a very solid FG structure, and then drill and tap for machine screws.

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Old 03-06-2019, 07:39   #41
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Re: Fixing a stripped screw hole

Last time I had this problem I was short on time and materials. No marine epoxy to hand. I used some rapid araldite with a bit of tape over to flatten level with the hull. when set I tapped a new hole and it has held ever since.
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Old 03-06-2019, 07:49   #42
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Re: Fixing a stripped screw hole

Maybe just replace with larger screws?
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Old 03-06-2019, 07:54   #43
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Re: Fixing a stripped screw hole

Also, there is a commercial product often sold at boat shows that combines a powder with a liquid that is effective. I regret I can't recollect the name. I once used it to repair a propane manifold. It lasted for years. It dries hard and is sandable.
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Old 03-06-2019, 10:20   #44
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Re: Fixing a stripped screw hole

Second vote for JB Weld, simple (1:1), works at any angle, strong and effective.

If color is an issue would need to gelcoat over it.

As with any fix like this, preparation of the surface is key: clean and good contact.


https://www.jbweld.com/
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Old 04-06-2019, 16:37   #45
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Re: Fixing a stripped screw hole

Selleys Knead It Putty Aqua.
Too easy no mess and quick.

Roll it into a a thin sausage push in the hole .
Can be drilled and sanded or a sharp self tapper will go in tight .
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