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Glueing stuff inside a fiberglass fueselage??

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Glueing stuff inside a fiberglass fueselage??

Old 02-09-2010, 04:52 AM
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iflyg450
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Default Glueing stuff inside a fiberglass fueselage??

I have been working on a old pattern plane, the inside of the fiberglass fueselage is a rough texture. I tried 5min epoxy to glue stuf in, I roughed and cleaned the area very well. But after the epoxy dries I can pop off what ever componet I just glued on. So what am I doing wrong????
Old 02-09-2010, 07:43 AM
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AA5BY
 
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Default RE: Glueing stuff inside a fiberglass fueselage??

I've only done one fiberglass fuselage build and it was many years ago. The instructions called for using silicone adhesive to glue bulkheads and it worked very well. It sticks tenaciously to the fiberglass.
Old 02-09-2010, 08:05 AM
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iflyg450
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Default RE: Glueing stuff inside a fiberglass fueselage??

great thats where I was headed. We have tones of hi streagth silicone adhesive here at work. Thank you for the reply sir!

-Jason
Old 02-09-2010, 02:31 PM
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Highflyer2
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Default RE: Glueing stuff inside a fiberglass fueselage??

try the Loctite product hysol 9462

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Old 02-09-2010, 02:58 PM
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Edwin
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Default RE: Glueing stuff inside a fiberglass fueselage??

I use Goop from the hardware store. Sticks like elephant snot when cured, to everything. A dab on a retract air tank straight to the inside of the fuse and you're good. Was still there after a post hole meneuver. RIP spitfire.
Edwin
Old 02-09-2010, 10:16 PM
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JohnW
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Default RE: Glueing stuff inside a fiberglass fueselage??

Ditto on the hysol 9462. Execelent adhesion to wood and composites.
Old 02-10-2010, 11:23 AM
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Default RE: Glueing stuff inside a fiberglass fueselage??

Hi!
Hysol is best!
Old 02-11-2010, 09:12 PM
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Steve Collins
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Default RE: Glueing stuff inside a fiberglass fueselage??

You could be having a problem with mold release on the inside of the fiberglass. I am currently finishing up a Grumman Panther that had lots of mold release on the inside. I thought I had cleaned it all out using lacquer thinner, acetone, etc. I found out that these solvents don't really affect the mold release. The only thing that works with this stuff is very warm soapy water.

If there is even a trace of mold release in there, nothing will stick to it for very long.

Once you are absolutely certain the surface is clean, then I second the recommendation for Hysol 9462.

Another adhesive with superior bonding qualities is E6000. It can be found in craft stores. Locally there is a Michael's craft store that always stocks it.
Old 02-12-2010, 01:57 AM
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HighPlains
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Default RE: Glueing stuff inside a fiberglass fueselage??

Mold release is usually found on the outside of the fuselage, not on the inside. But some resins are very slick or waxy, so it is a good practice to sand the inside surface and clean with acetone where you intend to glue. A good quality epoxy works fine, but 5 min epoxy is generally poor. For bonding servos, use 1/2" thick blocks to provide a bed for servo rails. For firewalls, use chopped glass and cabosil.
Old 02-12-2010, 05:05 AM
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iflyg450
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Default RE: Glueing stuff inside a fiberglass fueselage??

I found a magnabond product at work that did the job. I also got some info that the plane I am working on is not an epoxy/glass its polyester/glass which is why the epoxy isn't really getting the job done.
Old 02-12-2010, 07:58 AM
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Rodney
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Default RE: Glueing stuff inside a fiberglass fueselage??

As iflyg450 says, epoxy and polyester are NOT compatible.
Old 02-12-2010, 08:20 AM
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Default RE: Glueing stuff inside a fiberglass fueselage??



Not compatible... mostly, except that epoxy will adhere to polyesterwhere aspolyester will not adhere to epoxy. At least it has for my past 35 years.Preperation is always the key.



hook

Old 02-12-2010, 09:41 AM
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Steve Collins
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Default RE: Glueing stuff inside a fiberglass fueselage??

Mold release is usually found on the outside of the fuselage, not on the inside.
That was my understanding as well-until I found it all over the inside of a fiberglass fuselage. I haven't any idea why a manufacturer would do this.
Old 03-27-2010, 11:01 PM
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Default RE: Glueing stuff inside a fiberglass fueselage??

Hi.
The best adhesive to use is a Styrene based type (PFM, E6000, GOOP, etc.). Once applied and cured, the glue joints will not fail. Hysol works too, but is expensive. The E6000 is avail from WalMart craft section for cheap.
As others who have used these types posted, these glues really stick to the surfaces, and the glue joint formed WILL NOT fail, unless of course you destroy the acft.

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