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Old 12-07-2012
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Epoxy Filler needed?

I am in the process of removing some handrails and reinstalling after varnishing. I think I am going to get some West Epoxy - something I have never used before. So I need some opinions on the best way to do this.

For this purpose will I need a filler to make it thicker before putting the epoxy in the screw hole. How do others do it? And which filler would I use of I am going to drill it after it dries?
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Old 12-07-2012
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Re: Epoxy Filler needed?

This is what I have used, works very well for potting holes.

West System 406 Colloidal Silica
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Old 12-07-2012
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Re: Epoxy Filler needed?

If you are using west system, use the 404 high density filler:

West System 404 High-density Filler

Some use 406 colloidal silica or mix it to the 404 to amp up the strength, but unless your handrails are under serious potential shock loading (jacklines, turning blocks, etc.,) it's overkill. If you're rebedding cleats, chocks, deck hardware, travellers, winches,etc., then
406 is a necessity.

To do it right, you need to do more than just wipe some goop into the existing holes. Follow the instructions here:

WEST SYSTEM | Projects | Fiberglass Boat Repair & Restoration - Repairing machined holes in fiberglass

and here:
Sealing Deck Penetrations to Prevent Core Rot Photo Gallery by Compass Marine at pbase.com
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Old 12-07-2012
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Re: Epoxy Filler needed?

West 610 already to go. just put in chalking gun and use
WEST SYSTEM SIX10 THICKENED EPOXY ADHESIVE CARTRIDGE - 190 mL from Aircraft Spruce
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Old 12-07-2012
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Re: Epoxy Filler needed?

Quote:
Originally Posted by Pamlicotraveler View Post
I am in the process of removing some handrails and reinstalling after varnishing. I think I am going to get some West Epoxy - something I have never used before. So I need some opinions on the best way to do this.

For this purpose will I need a filler to make it thicker before putting the epoxy in the screw hole. How do others do it? And which filler would I use of I am going to drill it after it dries?
If you are just filling screw holes to protect the core, why not use JBQuick instead? West System epoxy makes you wait a day to dry and JBQuick will dry in five minutes. I usually drill the hole out a few sizes bigger, tape below, then fill the hole with JBQuick. Wait five minutes, re-drill the hole to the proper size and install your hardware. West System Epoxy is great and the filler works well when you want peanut butter instead of syrup but it dries slow. Just my 2cents.
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Old 12-07-2012
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Re: Epoxy Filler needed?

I use the pumps. Makes things a lot easier. Save the pumps.
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Re: Epoxy Filler needed?

JB KWIK is 5-10% iron. Your stainless steel fasteners won't like it. if you're requiring a day for west to cure, use a faster hardener.

West Six10 premix is good stuff and sets fast (4-6 hours) and if you aren't going to do anything else requiring epoxy , it is a good choice.
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Re: Epoxy Filler needed?

Quote:
Originally Posted by overbored View Post
West 610 already to go. just put in chalking gun and use
WEST SYSTEM SIX10 THICKENED EPOXY ADHESIVE CARTRIDGE - 190 mL from Aircraft Spruce
That looks pretty slick! I'm assuming that you have to use the whole tube (it doesn't just mix what you use)?
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Old 12-07-2012
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Re: Epoxy Filler needed?

No, you don't have to use the whole cartridge. The unused portion in the cartridge will stay good. You do have to replace the mixing tip. They sell them separately.
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Old 12-07-2012
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Re: Epoxy Filler needed?

Check out these guys. I've used there stuff on several projects and it's pretty good.

Clear Marine Epoxy Resins-Paints - Largest Online epoxy source;
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