[Alberg30] When to use polyester and not

[Scott Wallace]

Thanks!

George Dinwiddie wrote:

> If it's just missing gelcoat, and not too large an area, you probably
> won't have much trouble with this.
>
> You can get gelcoat repair kits that have a small amount of gelcoat as
> well as some tints to match the color.  This is a real art, as you want
> the color of the cured gelcoat to match, and that's different from when
> it's wet.  You'll probably have to make some test batches, mixing the
> same amount of gelcoat and keeping track of the colerant added, to
> compare with your current hull if you want a good match.
>
> I think these kits usually have some wax mixed in the gelcoat.  The wax
> rises to the surface and blocks the air, allowing the suface to cure
> hard.  If it doesn't, you'll want to get a little PVA (poly-vinyl
> alcohol) to paint or spray over it to do the same thing.
>
> I usually just mix up some thickened epoxy (thickened to peanut-butter
> consistency with glass beads for easy sanding) to fill the hole and then
> apply some touch-up paint over top.  If it's just gel-coat that's
> missing, you should be able to do the epoxy in one go.  If you need two
> (sometimes the epoxy is too soft and sags out of the hole), then don't
> forget to wash the first coat with detergent and water to remove the
> amine blush.  Otherwise the second layer of epoxy will not bond well.
>
>   - George
>
> Scott Wallace wrote:
> > Hi George,
> >
> > What would you reccomend for small "chunks" of gelcoat that have come off of my
> > bow on my Bluesnose fiberglass sloop? I need something with fill in it or else a
> > coat or two of epoxy to replace the small holes where my sloop hit the metal edge
> > of the dock coming in to fast...the fiberglass underneath looks fine but the
> > gelcoat took a beating...
>
> --
>   ----------------------------------------------------------------------
>    Hope your road is a long one.                        George Dinwiddie
>    May there be many summer mornings when,       gdinwiddie at alberg30.org
>    with what pleasure, what joy,                 http://www.Alberg30.org
>    you enter harbors you're seeing for the first time;
>                                             from 'Ithaka' by C.P. Cavafy
>   ----------------------------------------------------------------------
>
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