Will, as far as the factory gel coat goes two very important principles:
1. Make sure you wash all the gel coated bits very, very thoroughly. The
release agent used in the moulds has a great ability to induce
potentially serious allergic reactions, if you just sand it off. (That
speaking with my medical hat on!)
2. You need to fine sand the gel coat until you cannot see even a hint
of any shiny patch, even with a magnifying glass. Any shiny bits however
small will give imperfect adhesion of your covering coat.
Regards, David, GXSDJ
On 2016-01-24 13:43, William Daniell wrote:
> Ummm....you got me there.
>
> I am talking about the white finish of parts that come from the factory.
>
> Will
>
> By that way david...nice pun
> On Jan 24, 2016 6:50 AM, "Jan de Jong" <jan_de_jong@casema.nl> wrote:
>
> There may be confusion re what we call gel coat?
>
> On 1/24/2016 12:12 PM, davidjoyce@doctors.org.uk wrote:
>
> Will, on the principle that extra weight is a definite downer and always think
light or lighter, I would remove as much as you can without damaging the
fibreglass,
subject to getting your perfect profile. If the gel coat was properly
applied in the first place it should be pretty much in chemical continuity with
the FG resin.
>
> Regards, David Joyce, GXSDJ, with gel coat finish I would not change if you
> paid
me!
>
> On 2016-01-23 22:12, William Daniell wrote:
>
> Is it ok to fill on top of gel coat orovided that its scuffed up. In other
> words
is it necessary to go down to the fiberglass?
>
> I am dealing with the wing skin join and the fuselage join
>
> Thanks
>
> Will
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