Re: Fiberglassing Question

After looking at the sight below and thinking it over I realised where
the man with the education was making his mistake. He just coated with
epoxy he did not glass and fill as would be done on many boats. When
glassed filled and finneshed it would have a lot more protection from
water on the outside. as far as the inside being coated two or three
times as in encapsolation it would easly have a thicker coating then he
had. The inside if cared for properly would also dry out and not have
the same exposure to water as submesion. As far as paint it would never
be as tough in the long run in the real world with real beaches.

Jon

--- Inbolger@yahoogroups.com, Patrick Crockett <pcrockett@n...> wrote:
>
> James Greene wrote:
>
> >If you had used epoxy instead of polyester resin, I would have
suggested mixing your own putty by adding something like wood flour or
wheat flour or micro balloons to epoxy -- because epoxy is waterproof
and polyester is not.
> >
> >
> Interestingly, this website
>
>http://www.angelfire.com/nc3/davecarnell/articles.html#1
>
> claims that epoxy is not terribly waterproof. The author recommends
> latex houspaint.
>
> Patrick
>
Micro-balloons and polyester make perfect fairing compound. "Finish" resin,
not" laminating" as laminating will not harden . -----
From: "Frank Orts" <fortsiii@...>
To: <bolger@yahoogroups.com>
Sent: Friday, January 27, 2006 7:49 PM
Subject: [bolger] Re: Fiberglassing Question


> The original "Stars & Stripes" that Dennis Conner used to retake the
> America's Cup used bondo extensively to fair the bottom. Of course it
> never sat in the water too long. Even then, it was showing signs of
> cracking under stress (I saw it myself when to boat was on display)
> --- Inbolger@yahoogroups.com, "txsailor37" <txsailor37@y...> wrote:
> >
> > Hi guys,
> >
> > I finally got my Bobcat covered with a layer of fiberglass and
> > polyester resin. I have sanded it fairly smooth and was thinking of
> > filling some of the spots I had to sand through due to bubbles with
> > bondo. Then I was going to give the whole thing another coat of
> resin,
> > and finish sanding for a nice finish. Does anyone see any problems
> > with this??????
> >
>
>
>
>
>
>
> Bolger rules!!!
> - NO "GO AWAY SPAMMER!" posts!!! Please!
> - no cursing, flaming, trolling, spamming, respamming, or flogging dead
horses
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> - Pls add your comments at the TOP, SIGN your posts, and snip away
> - Plans: Mr. Philip C. Bolger, P.O. Box 1209, Gloucester, MA, 01930, Fax:
(978) 282-1349
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>
>
>
>
>
>
The original "Stars & Stripes" that Dennis Conner used to retake the
America's Cup used bondo extensively to fair the bottom. Of course it
never sat in the water too long. Even then, it was showing signs of
cracking under stress (I saw it myself when to boat was on display)
--- Inbolger@yahoogroups.com, "txsailor37" <txsailor37@y...> wrote:
>
> Hi guys,
>
> I finally got my Bobcat covered with a layer of fiberglass and
> polyester resin. I have sanded it fairly smooth and was thinking of
> filling some of the spots I had to sand through due to bubbles with
> bondo. Then I was going to give the whole thing another coat of
resin,
> and finish sanding for a nice finish. Does anyone see any problems
> with this??????
>
--- Inbolger@yahoogroups.com, "txsailor37" <txsailor37@y...> wrote:
>
> Hi guys,
>
> I finally got my Bobcat covered with a layer of fiberglass and
> polyester resin. I have sanded it fairly smooth and was thinking of
> filling some of the spots I had to sand through due to bubbles with
> bondo. Then I was going to give the whole thing another coat of
resin,
> and finish sanding for a nice finish. Does anyone see any problems
> with this??????
>


I live in La Grange, Tx and this boat is going to spend most of
it's time on a trailer. I don't think it is going to have a chance to
soak up much water.

BOBBY
James Greene wrote:

>If you had used epoxy instead of polyester resin, I would have suggested mixing your own putty by adding something like wood flour or wheat flour or micro balloons to epoxy -- because epoxy is waterproof and polyester is not.
>
>
Interestingly, this website

http://www.angelfire.com/nc3/davecarnell/articles.html#1

claims that epoxy is not terribly waterproof. The author recommends
latex houspaint.

Patrick
--- Inbolger@yahoogroups.com, "txsailor37" <txsailor37@y...> wrote:
>
> Hi guys,
>
> I finally got my Bobcat covered with a layer of fiberglass and
> polyester resin. I have sanded it fairly smooth and was thinking
of
> filling some of the spots I had to sand through due to bubbles
with
> bondo. Then I was going to give the whole thing another coat of
resin,
> and finish sanding for a nice finish. Does anyone see any
problems
> with this??????
>

Sounds appropriate to me:-)

If you put some good exterior paint over it you should be fine. Sand
between coats to get the best adhesion.

Be sure to post some photos when you launch!

Nels
Bondo contains a mineral zeolite, which will absob moisture. I would
not use it on the hull of a boat if you want the boat to last any length
of time. Polyester? Polyester resin does not work as well with wood
as expoxy resin. Epoxy bonds to wood better and less permeable to water.

Is the tx for texas? I'm in tyler.


Michael Collins


txsailor37 wrote:

> Hi guys,
>
> I finally got my Bobcat covered with a layer of fiberglass and
> polyester resin. I have sanded it fairly smooth and was thinking of
> filling some of the spots I had to sand through due to bubbles with
> bondo. Then I was going to give the whole thing another coat of resin,
> and finish sanding for a nice finish. Does anyone see any problems
> with this??????
>
>
>


[Non-text portions of this message have been removed]
If you had used epoxy instead of polyester resin, I would have suggested mixing your own putty by adding something like wood flour or wheat flour or micro balloons to epoxy -- because epoxy is waterproof and polyester is not.

But Bondo is okay for filling polyester because Bondo is made of polyester, too.

The problem you might experience (if your boat is in the water for long periods of time) is that polyester resin tends to absorb moisture when it gets wet enough for long enough.

James Greene





On Thu, 26 Jan 2006 00:44:28 -0000, txsailor37 wrote:
> Hi guys,
>
> I finally got my Bobcat covered with a layer of fiberglass and
> polyester resin. I have sanded it fairly smooth and was thinking of
> filling some of the spots I had to sand through due to bubbles with
> bondo. Then I was going to give the whole thing another coat of resin,
> and finish sanding for a nice finish. Does anyone see any problems
> with this??????
>
>
>
>
>
> Bolger rules!!!
> - NO "GO AWAY SPAMMER!" posts!!! Please!
> - no cursing, flaming, trolling, spamming, respamming, or flogging
> dead horses
> - stay on topic, stay on thread, punctuate, no 'Ed, thanks, Fred' posts
> - Pls add your comments at the TOP, SIGN your posts, and snip away
> - Plans: Mr. Philip C. Bolger, P.O. Box 1209, Gloucester, MA, 01930,
> Fax: (978) 282-1349
> - Unsubscribe:bolger-unsubscribe@yahoogroups.com
> - Open discussion:bolger_coffee_lounge-subscribe@yahoogroups.com
> Yahoo! Groups Links
>
>
>
>
>
>
Hi guys,

I finally got my Bobcat covered with a layer of fiberglass and
polyester resin. I have sanded it fairly smooth and was thinking of
filling some of the spots I had to sand through due to bubbles with
bondo. Then I was going to give the whole thing another coat of resin,
and finish sanding for a nice finish. Does anyone see any problems
with this??????