Re: restoring Bolger Otter

--- In bolger@y..., "bellyfeel2000" <isom@m...> wrote:
> I recently inherited an Otter from an old freind. It is in
> relatively good shape other than some damaged areas on the upper
rub
> rail. I understand that it was built in the early to mid 1970's.
> The hull does not appear to be peeling anywhere, so I am assuming
> epoxy resin was used instead of polyester.
>
> My questions are:
>
> 01. How can you determine what kind of resin was used in
> construction? Are there any specific tests?

Not sure, but if you whack it with a hammer, poly will probably crack
bad and epoxy only a little. Not a test I would recommend tho. Poly
is brittle (from experience), whereas epoxy stays more flexible. Look
for radial cracks from stress points. Worse come to worse, try to fix
a spot with poly. If it holds properly, the base is poly, if it comes
off, it is epoxy.
>
> 02. If polyester resin was used, should I use polyester resin
again?

NO!! Let me qualify. Poly is not waterproof, epoxy is. Why repair
with an inferior quality product?
>
> 03. What kind of prep would be needed to use epoxy resin for
repairs
> on top of the old layup (if it is polyester)?

Sand it rough (80 grit) and lay it on. Poly won't stick to epoxy(very
well), but epoxy is great for fixing poly.


Steve
I recently inherited an Otter from an old freind. It is in
relatively good shape other than some damaged areas on the upper rub
rail. I understand that it was built in the early to mid 1970's.
The hull does not appear to be peeling anywhere, so I am assuming
epoxy resin was used instead of polyester.

My questions are:

01. How can you determine what kind of resin was used in
construction? Are there any specific tests?

02. If polyester resin was used, should I use polyester resin again?

03. What kind of prep would be needed to use epoxy resin for repairs
on top of the old layup (if it is polyester)?

Any insight would be appreciated.