Hull-to-deck bond----semi-technical questions
 

Questions:

I have an old Laser which has a hull/deck flange. The bond is lost along
quite a bit of the flange. It appears that someone attempted to rebond it
with epoxy at one time, but unsuccessfully.

My questions are these: 1) Since polyurethane adhesive, such as 3M 5200, is
often used as a hull-to-deck bonding agent on larger boats, wouldn't
polyurethane be suitable for a smaller boat, too? 2) The space between the
two shells along the flange is too narrow to get something as thick as 5200
to flow into it. Since Gorilla Glue is a polyurethane adhesive, any reason
it wouldn't work as well? It would flow nicely into the space and it
expands when it cures, which would fill the space nicely.

Any opinions or experience with Gorilla?

TIA,

Max

Hull-to-deck bond----semi-technical questions
 

Maxprop wrote:

Questions:

I have an old Laser which has a hull/deck flange. The bond is lost along
quite a bit of the flange.

Do you mean that the the flange is damaged, big chunks torn
out of it, or that the area of the bond between layers is
gone soft & cheesy?

.... It appears that someone attempted to rebond it
with epoxy at one time, but unsuccessfully.


It was probably considered successful, at least for a while.

My questions are these: 1) Since polyurethane adhesive, such as 3M 5200, is
often used as a hull-to-deck bonding agent on larger boats, wouldn't
polyurethane be suitable for a smaller boat, too?

Yes. A lot of people like Sikaflex better.

.... 2) The space between the
two shells along the flange is too narrow to get something as thick as 5200
to flow into it. Since Gorilla Glue is a polyurethane adhesive, any reason
it wouldn't work as well? It would flow nicely into the space and it
expands when it cures, which would fill the space nicely.

Any opinions or experience with Gorilla?


I haven't used Gorilla Glue much, and IMHO it isn't really
very strong (so I don't plan to use it in the future). It
does not fill gaps very well either (again IMHO), seems to
foam up.

The best way to repair a hull/deck joint is to seperate them
and re-attach them along the full length. Yes it's a PITA.
But if you need a project for a long winter, it's great. At
some point along the way, you'll be telling yourself 'it'd
be easier to just build a d^%% boat from scratch' which
tells you you're on the right track.

Fresh Breezes- Doug King

Hull-to-deck bond----semi-technical questions
 

Max, why waste sailing time? Sell the thing to someone who wants the
job and buy a better Laser hull. They are very cheap and easy to find.
I have a nice hull for 300 bucks...you're too far away though.


RB
35s5
NY

Hull-to-deck bond----semi-technical questions
 

--
"Swab Rob" wrote
Max, why waste sailing time? Sell the thing to someone who
wants the
job and buy a better Laser hull. They are very cheap and
easy to find.
I have a nice hull for 300 bucks...you're too far away
though.


yeah, no sense fixing things.

If a winch stops working, sell the boat!

S

Hull-to-deck bond----semi-technical questions
 

though.

yeah, no sense fixing things.



Ever try this repair, Scotty? Laser's are a dime a dozen. Maybe you can
start a laser repair company to save all the bad ones!
Ignorance is bliss...and Scotty's pal.


RB
35s5
NY

Hull-to-deck bond----semi-technical questions
 

--
"Swab Rob" wrote
yeah, no sense fixing things.



Ever try this repair, Scotty? Laser's are a dime a dozen.
Maybe you can
start a laser repair company to save all the bad ones!
My Ignorance is bliss...

Right. Just because you're too stupid and klutzy to do boat
repairs, doesn'y mean everybody is.

S

Hull-to-deck bond----semi-technical questions
 

Gorilla glue foams up to much. Air bubbles add no strength. It also doesn't
stick to everything.

Try West Epoxy and a syringe.

As a general rule use the best glue possible for the job. Otherwise, the
second time you do the job (and you will) you'll have to remove all the
glue.

Check the 3M website for adhesives. They have some amazing stuff. The had
some spray adhesives that held fiberglass together at over Mach 1 on
aircraft wings. (The fiberglass was not structural, it was an aperture). The
same glue could be used to adhere Katy to the outhouse seat.

Glory!



"DSK" wrote in message
. ..
Maxprop wrote:

Questions:

I have an old Laser which has a hull/deck flange. The bond is lost along
quite a bit of the flange.

Do you mean that the the flange is damaged, big chunks torn out of it, or
that the area of the bond between layers is gone soft & cheesy?

.... It appears that someone attempted to rebond it with epoxy at one
time, but unsuccessfully.


It was probably considered successful, at least for a while.

My questions are these: 1) Since polyurethane adhesive, such as 3M 5200,
is often used as a hull-to-deck bonding agent on larger boats, wouldn't
polyurethane be suitable for a smaller boat, too?

Yes. A lot of people like Sikaflex better.

.... 2) The space between the two shells along the flange is too narrow
to get something as thick as 5200 to flow into it. Since Gorilla Glue is
a polyurethane adhesive, any reason it wouldn't work as well? It would
flow nicely into the space and it expands when it cures, which would fill
the space nicely.

Any opinions or experience with Gorilla?


I haven't used Gorilla Glue much, and IMHO it isn't really very strong (so
I don't plan to use it in the future). It does not fill gaps very well
either (again IMHO), seems to foam up.

The best way to repair a hull/deck joint is to seperate them and re-attach
them along the full length. Yes it's a PITA. But if you need a project for
a long winter, it's great. At some point along the way, you'll be telling
yourself 'it'd be easier to just build a d^%% boat from scratch' which
tells you you're on the right track.

Fresh Breezes- Doug King

Hull-to-deck bond----semi-technical questions
 

"Bob Crantz" wrote in

Check the 3M website for adhesives. They have some amazing
stuff. The had
some spray adhesives that held Katys' beehive together at
over Mach 1

Glory!

Hull-to-deck bond----semi-technical questions
 

On Thu, 15 Jun 2006 02:34:14 GMT, "Maxprop"
wrote:

Questions:

I have an old Laser which has a hull/deck flange. The bond is lost along
quite a bit of the flange. It appears that someone attempted to rebond it
with epoxy at one time, but unsuccessfully.

My questions are these: 1) Since polyurethane adhesive, such as 3M 5200, is
often used as a hull-to-deck bonding agent on larger boats, wouldn't
polyurethane be suitable for a smaller boat, too? 2) The space between the
two shells along the flange is too narrow to get something as thick as 5200
to flow into it. Since Gorilla Glue is a polyurethane adhesive, any reason
it wouldn't work as well? It would flow nicely into the space and it
expands when it cures, which would fill the space nicely.

Any opinions or experience with Gorilla?

TIA,

Max



I would not use Gorilla glue. It expands but if the cracks are too
big it expands in the maner of an expanding foam and offers no real
strength in the crack or is it likely to be a waterproof seal.

wear gloves if you use Gorilla glue for any purpose. If it cures on
your hands they will turn black and only time will remove it.

Frank

Hull-to-deck bond----semi-technical questions