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Irunbird 09-10-2012 03:21 PM

Attaching G10 to fiberglass
I'm wanting to beef up a portion of my cockpit seat with G10 to stiffen it before fitting a tiller pilot (without through-bolting it and having screw heads in the back of the seat). I've examined all methods of attaching the tiller pilot, and using the Raymarine cantilever looks about the best. The problem is that the seat backs where this needs to be mounted are a bit too flexible, the further away from the edges you go- it's just two-ply fiberglass. The horizontal surface of the seat and the side deck is cored, so I think glueing something strong like G10 would work, but it has to span the distance of the seat back (around 10 inches). What I'm wondering is if simply sanding both surfaces then mixing enough West System epoxy (maybe mixed with a little adhesive filler like 403) to glue them together would be enough so that it never comes apart.. Is there a better method without using screws?


eherlihy 09-10-2012 06:42 PM

Re: Attaching G10 to fiberglass
Using an epoxy with a filler, like West's microfibers, will give you the best possible bond. G10 is FRP.

tommays 09-10-2012 06:44 PM

Re: Attaching G10 to fiberglass

WDS123 09-10-2012 07:49 PM

Re: Attaching G10 to fiberglass
We use G10 for deck fittings extensively. At WD Schock - the G10 gets glassed in, typically with vinylester resins

olson34 09-10-2012 09:06 PM

Re: Attaching G10 to fiberglass
I have glassed in a number of "G10" backing plates of varying thicknesses. I used West System epoxy with their high-strength thickener. Rough up both sides (G10 and the receiving surface) with 16 grit. Use a right-angle sander/grinder and aim the out-fly into a 3" hose end of your shop vac.
Cleanse it with acetone.
That's one High Strength bond!


Note that sometimes the vendor will have G10 listed as G10/FR4. Same stuff.
If you are outside of a metro area with a plastics supplier, you can get it on-line from McMaster Carr.

Irunbird 09-11-2012 07:23 AM

Re: Attaching G10 to fiberglass
Thanks, you guys- great info!

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