| Fairing gloop #170972 03/09/09 03:06 PM 03/09/09 03:06 PM |
Joined: Sep 2005 Posts: 893 waynemarlow OP
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Posts: 893 | Has anyone found a lightweight fairing filler that isn't so tough that when you sand it, it is not tougher than the glass or foam around it. Tried various products but always they end up so dense that you do more damage to the surrounding areas than the hollow area you are trying to fill. The best I have found so far is glass spheres and epoxy but it takes forever to cure hard enough to sand that it negates its purpose. Lightweight polyester car body filler mixed with about 25% glass spheres does a real cool job but just the thought of laying carbon etc up in epoxy then fairing it with polyester just doesn't seem right. Any ideas anyone ? | | | Re: Fairing gloop
[Re: waynemarlow]
#171126 03/10/09 02:05 PM 03/10/09 02:05 PM |
Joined: Jun 2001 Posts: 115 Kevin Cook
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Posts: 115 | My favorite gloop is a fairing mixture sold by US Composites, www.shopmaninc.com, and is a mixture of phenolic microspheres and colodial silica. The phenolic spheres are the reddish brown ones that feather much better than glass spheres. They sand quickly. Since you can use any type of unfilled epoxy resins with it, you can control cure time to suit your situation. If you want quick turn around, use one of the TETA based hardners with a 10 minute pot life. I do not usually use any polyester based fillers on the outside of the boat or underwater. Epoxy has better adhesive properties and no water absorption. But I do admit to using Bondo on those last little tiny places I always seem to find after spraying primer. By that point I just want to get the whole thing over with! | | | Re: Fairing gloop
[Re: Kevin Cook]
#171204 03/10/09 10:06 PM 03/10/09 10:06 PM |
Joined: Oct 2005 Posts: 951 Brisbane, Queensland, Australi... ncik
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Posts: 951 Brisbane, Queensland, Australi... | That is how the pro fairers do it. 99.9% with epoxy and microballoons, then high build primer, then touch up small knicks with "car bog" before undercoat and gloss. Alternatively, for smaller jobs, I've used a pre-mixed 1:1 filler called technifill instead of microballoons. It is a bit pricier but much easier to mix than balloons.
Last edited by ncik; 03/10/09 10:14 PM.
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