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Old 05-04-2006
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Screws that wont tighten

Can you help with a problem i have?

I have several fittings,hardware etc that is screwed into the grp on the deck of my boat.Some of the screws won't tighten up,what is the best method to fix this problem?

I thought of filling the existing screw holes with epoxy resin,re-drill then re-screw the screws in, there has to be an easier way!
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Old 05-04-2006
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That is the easier way!

Jeff
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Old 05-04-2006
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You can always go to a larger diameter screw or through bolt it, but it should be repaired with epoxy and redrilled. Fiberglass is not the greatest material to hold a type A (sheet metal) screw.
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Old 05-04-2006
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this is the easy way

put duct tape over the holes and surrounding area, redrill holes with a bit at least twice as larger as the screw, larger if possible. Try not to drill all the way through the back of the glass, if you do put duct tape over the bottom of the hole. As you drill, examine the material coming out, if wood, does it look fresh. Scrape out all the surrounding wood with a nail bent to fit in the hole, you can put the nail in a drill, but be careful. Mix up some epoxy and fill the holes being careful to get the air bubles out, this is the hardest step, using a syringe is great. When hard almost, remove tape, take a razor and trim the epoxy. When hard, redrill for the screws, bed and be satisfied that this is a job you should never have to repeat.
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Old 05-04-2006
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Fiberglass is a lousy material for holding screws. The glass fibers will break and the resin isn't very good at holding screws. Your best option is to fill with thickened epoxy and then re-drill and use the screws again. If you can through bolt instead, you'll probably have much better results in the long run doing that instead of using screws.

If the fittings in question have any kind of load on them, you're much better off through bolting, rather than screwing them down. The epoxy filling is also good for helping seal the core, if you have a cored deck.
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Old 05-09-2006
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Good Ideas ;here Is Another Easy And Works ;go To Hardware Get Some Dowl Rod Any Size You Need;;drill Hole Size Of Dowl Glue Tap Dowl In; Recess A Little Put Glue Over Let Dry Drill Put Screw Back Caulk;;i Highly Recommend Gorilla Glue Read Bottle Carefully Excellent Glue Kind Of Expensive But Worth It;bolts Are Best But Look Bad;
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Old 05-09-2006
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Hi Mariner;
I would advise you follow exactly what devildad said above, right to last sentence. Then drill though the deck and thrubolt your fittings. Never attach hardware to your deck with screws.

edit: make sure you use backplates and follow proper procedures to bed hardware.

Phil

Last edited by DeepFrz; 05-09-2006 at 07:30 PM.
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