Re: Southern Pine Plywood & Resin
Give it another year or two. Our Brick's fiberglass was in perfect
condition when we got it but now peels off when you look at it funny.
Stored outside for two years or so, acrylic latex paint. It's luan and
that's pretty porous. I didn't build so I don't know what flavor or
age of polyester. Maybe that's the problem? The stuff goes bad in a
relatively short time, I think maybe a year or two in the can. My car
repair used older resin and took 3 days to cure.
--- Inbolger@egroups.com, Paul van der Merwe <paul.vandermerwe@f...>
wrote:
condition when we got it but now peels off when you look at it funny.
Stored outside for two years or so, acrylic latex paint. It's luan and
that's pretty porous. I didn't build so I don't know what flavor or
age of polyester. Maybe that's the problem? The stuff goes bad in a
relatively short time, I think maybe a year or two in the can. My car
repair used older resin and took 3 days to cure.
--- Inbolger@egroups.com, Paul van der Merwe <paul.vandermerwe@f...>
wrote:
> Hi,pine
> some observations building two Nymphs from treated CD exterior
> ply and polyester resin that may help. The one boat has spent morethan a
> year outside, with no cover and painted with house acrylic(latex)paint. It
> is still in perfect condition.sponge.
>
> 1.a. The ply was very dry and soaked up any resin like a
> After 2 thick coats on the D side(outside of boat) it still soakedup most
> of the resin out of the cloth. I can't see this delaminating infuture as it
> will need to delaminate the first layer of the ply.retained
> b. I tried polyester with a piece of marine ply (looks like
> meranti). One coat would not soak into the wood much and the cloth
> its resin.wood
> Conclusion: I feel it is "horses for courses". Cheap, porous
> like pine = "cheap" polyester resin. Dense (read expensive) marineply needs
> epoxy for its glue properties.has stood
> 2. We used the good C side inside the boat. This had two thick
> coatings of polyester resin and gave a hard wearing surface. This
> up well to the abuse from the kids.
> 3. This makes for a heavy boat though.
>
> regards
> Paul
> NZ - where it's sailing weather with 20kts winds.
>
> Bolger rules!!!
> - no cursing, flaming, trolling, or spamming
> - no flogging dead horses
> - add something: take "thanks!" and "ditto!" posts off-list.
> - stay on topic and punctuate
> - add your comments at the TOP and SIGN your posts
Hi,
some observations building two Nymphs from treated CD exterior pine
ply and polyester resin that may help. The one boat has spent more than a
year outside, with no cover and painted with house acrylic(latex) paint. It
is still in perfect condition.
1.a. The ply was very dry and soaked up any resin like a sponge.
After 2 thick coats on the D side(outside of boat) it still soaked up most
of the resin out of the cloth. I can't see this delaminating in future as it
will need to delaminate the first layer of the ply.
b. I tried polyester with a piece of marine ply (looks like
meranti). One coat would not soak into the wood much and the cloth retained
its resin.
Conclusion: I feel it is "horses for courses". Cheap, porous wood
like pine = "cheap" polyester resin. Dense (read expensive) marine ply needs
epoxy for its glue properties.
2. We used the good C side inside the boat. This had two thick
coatings of polyester resin and gave a hard wearing surface. This has stood
up well to the abuse from the kids.
3. This makes for a heavy boat though.
regards
Paul
NZ - where it's sailing weather with 20kts winds.
Bolger rules!!!
- no cursing, flaming, trolling, or spamming
- no flogging dead horses
- add something: take "thanks!" and "ditto!" posts off-list.
- stay on topic and punctuate
- add your comments at the TOP and SIGN your posts
some observations building two Nymphs from treated CD exterior pine
ply and polyester resin that may help. The one boat has spent more than a
year outside, with no cover and painted with house acrylic(latex) paint. It
is still in perfect condition.
1.a. The ply was very dry and soaked up any resin like a sponge.
After 2 thick coats on the D side(outside of boat) it still soaked up most
of the resin out of the cloth. I can't see this delaminating in future as it
will need to delaminate the first layer of the ply.
b. I tried polyester with a piece of marine ply (looks like
meranti). One coat would not soak into the wood much and the cloth retained
its resin.
Conclusion: I feel it is "horses for courses". Cheap, porous wood
like pine = "cheap" polyester resin. Dense (read expensive) marine ply needs
epoxy for its glue properties.
2. We used the good C side inside the boat. This had two thick
coatings of polyester resin and gave a hard wearing surface. This has stood
up well to the abuse from the kids.
3. This makes for a heavy boat though.
regards
Paul
NZ - where it's sailing weather with 20kts winds.
Bolger rules!!!
- no cursing, flaming, trolling, or spamming
- no flogging dead horses
- add something: take "thanks!" and "ditto!" posts off-list.
- stay on topic and punctuate
- add your comments at the TOP and SIGN your posts