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Lag bolt stripped out fiberglass. How to fix?

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Lag bolt stripped out fiberglass. How to fix?

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Old 06-22-2014, 07:52 PM
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Default Lag bolt stripped out fiberglass. How to fix?

When replacing the bolsters in our Bullet one of the lag screws that hold the base to the floor of the boat stripped out. The bolster now has slight movement due to the hole being in the front of the base.

I'm looking for ideas on what to put in the hole that will be strong enough to hold the lag. The seat or the base will not be removed. Due to this I need to find something I can get through the seat base and down into the fiberglass.

My ideas so far. Mix up some two part epoxy and work it down into the hole. Allow it to cure then drill a pilot hole prior to running lag back into hole.

Thought about using epoxy putty. Thoughts?

Get some 5200 and put it into the hole. Again, allow to cure then drill pilot before running lag back in.

Hit me with your thoughts.......

Buck
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Old 06-22-2014, 08:06 PM
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how much room is under the floor in the area? you can get some mongo duty toggle bolts. 5200 is too soft. I dont see a way of acking" the putty, that stuff is usally pretty dense. might have better luck mixing some regular epoxy with thickener and just plug the very bottom of the hole, then mix up some fairly thin and pour it in so it fills all the little nooks and voids for better grab. not saying this will work, just tossing out ideas.
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Old 06-22-2014, 08:17 PM
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I pulled all my lags and used 1/4 20 toggles. If that's not an option you can get a syringe from a fiberglass supply shop and inject some thickened resin into the hole.
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Old 06-22-2014, 08:18 PM
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Phragle, room is limited. I'm guessing about a 1/2" between floor and whatever is below it. I'm thinking its a fuel tank that's directly below the hole. Access would be from top only.

I'm gonna dig around at the hardware store to see if I can find some sort of toggle style bolt that might expand after being inserted into the hole. Obviously not hitting or rubbing the tank would be a big concern going this route.

Buck
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Old 06-22-2014, 08:29 PM
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I got mine from Home Depot I'll see if I can dig up a pic
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Old 06-22-2014, 09:03 PM
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lil red, thank you for the input. If the toggle bolt doesn't work the syringe with resin sounds like a great idea.

Buck
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Old 06-23-2014, 06:47 AM
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not just resin. take some mat and shred it and stuff glass fibers into hole. soak with resin, push repeat.
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Old 06-23-2014, 07:45 AM
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Fuel tank is about an inch and a half under the floor. Same thing happened on my bullet. I epoxied hard wood dowels in the holes and re drilled. Much easier with bolsters out of coarse.
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Old 06-23-2014, 08:27 AM
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Garelick Toggle Bolts are what you need Buck. They come in SS.

[ATTACH=CONFIG]525072[/ATTACH]

[ATTACH=CONFIG]525073[/ATTACH]

http://www.iboats.com/Garelick-Toggl...-view_id.38770

http://www.ebay.com/itm/Garelick-Tog...-/390386902040

I have found them at one of the home improvements stores before, but they are rare to see there.
Attached Thumbnails Lag bolt stripped out fiberglass. How to fix?-41cokeoe8dl.jpg   Lag bolt stripped out fiberglass. How to fix?-21026_togglers_2.jpg  
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Old 06-23-2014, 12:36 PM
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Originally Posted by Sydwayz
Garelick Toggle Bolts are what you need Buck. They come in SS.

[ATTACH=CONFIG]525072[/ATTACH]

[ATTACH=CONFIG]525073[/ATTACH]

http://www.iboats.com/Garelick-Toggl...-view_id.38770

http://www.ebay.com/itm/Garelick-Tog...-/390386902040

I have found them at one of the home improvements stores before, but they are rare to see there.
Interesting product. I like. I'll do some shopping tonight and see what I come up with.

My first choice would be something like you mentioned or a toggle bolt due to the ease of installation and not having to remove the seat. Main concern here would be that the bolt isn't too long and rubs on the fuel tank after the install. I'm thinking a toggle bolt will have to be fairly long in order to go in far enough and allow the springs to expand. I fully intend to do some research into the space I have prior to making a decision. I'm gonna borrow a video scope to see what I have going under there.

Buck
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