Marine safe glue
 

Epoxi is widly spread...

But, sometimes other traits are wished for. Are there any marine performance
(for wood, plastic, ,metalls) glues that (compared to epoxi) are more...

a) elastic?

b) low density?

c) as epoxi but 1 komponent?

d) how is epoxi lowest density achived ?


Morgan O.

What are you trying to bond? There are many other waterproof adhesives
and sealants, but in order to make a recommendation, knowing the
application is important.


Morgan Ohlson wrote:
Epoxi is widly spread...

But, sometimes other traits are wished for. Are there any marine performance
(for wood, plastic, ,metalls) glues that (compared to epoxi) are more...

a) elastic?

b) low density?

c) as epoxi but 1 komponent?

d) how is epoxi lowest density achived ?


Morgan O.

epoxy and rescorcinol are strongest and "waterproof", others are "water
resistent" but have been used on boats. you can find information on
adhesives in "Do It Youself" books at the public library. I've used both
"plastic resin" (dry powder mixed with water, dries rigid) and
polyurethane (the kind squeezed out of a tube with a caulking gun) with
wood screws to build small boats.

Morgan Ohlson ) writes:
Epoxi is widly spread...

But, sometimes other traits are wished for. Are there any marine performance
(for wood, plastic, ,metalls) glues that (compared to epoxi) are more...

there are different kinds of epoxy with various characteristics.
they would be described on the seller's websites.

I don't think you can get away from mixing the stuff, or from the
unhealthy side effects. You should wear gloves when applying and a
mask when sanding.

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On Thu, 21 Oct 2004 13:05:25 GMT, Morgan Ohlson
wrote:

Epoxi is widly spread...

But, sometimes other traits are wished for. Are there any marine performance
(for wood, plastic, ,metalls) glues that (compared to epoxi) are more...

a) elastic?

b) low density?

c) as epoxi but 1 komponent?

d) how is epoxi lowest density achived ?


Morgan O.

Hi,

Try Sika 252 or 221, etc...

cheers,
Pete.

On Thu, 21 Oct 2004 13:41:26 GMT, Brian Nystrom wrote:

What are you trying to bond? There are many other waterproof adhesives
and sealants, but in order to make a recommendation, knowing the
application is important.


Morgan Ohlson wrote:
Epoxi is widly spread...

But, sometimes other traits are wished for. Are there any marine performance
(for wood, plastic, ,metalls) glues that (compared to epoxi) are more...

a) elastic?

b) low density?

c) as epoxi but 1 komponent?

d) how is epoxi lowest density achived ?

The list is so long that you wouldn't like to read it. That's why I asked
about which works.

To glue:
Everything from stainless steel (mast pod) = soft foam (seat cushens)


Morgan

On 21 Oct 2004 14:14:13 GMT, William R. Watt wrote:

epoxy and rescorcinol

Google asked if I ment resorcinol ?

Yes, and Pete C mentions Sika (silicone marine glues and sealants) That's
three. Yipeee! ;o)

Especially gluing foams and keeping the weight down is an issue. It's
somwhat stupid, in my oppinion to foam with epoxy.

Almost like shooting mosqitos whith a cannon. Tips still appreciated!


Greetings to all constructive builders!

Morgan O.

Canoes and kayaks have foam cushions glued to the inside of the hull to
kneel on. For that kind of foam you could ask at rec.boats.paddle.

the adhesive used for rigid foam in house building is polyurethane (PU in
the previous post) in the caulking gun tubes. the spnonsons on my one
sheeter Loonie are glued up out of two layers of rigid foam with that glue
in 1998 and are still holding. I've glued rigid foam to plywood with it. Has
held okay.
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homepage: www.ncf.ca/~ag384/top.htm
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Morgan Ohlson wrote in
:

Epoxi is widly spread...

But, sometimes other traits are wished for. Are there any marine
performance (for wood, plastic, ,metalls) glues that (compared to
epoxi) are more...

a) elastic?

b) low density?

c) as epoxi but 1 komponent?

d) how is epoxi lowest density achived ?


Morgan O.

I rely on three main adhesive/sealants Epoxy(with various fillers)
3M5200(CALLED A SEALANT BUT HAS GREAT ADHESIVE QUALITIES) and a product
called MArine GOOP (this stuff looks like that worthless silicon rubber
product, but is nearly as strong as 3M5200 but more elastic)

As for adhesision to various materials, if the adhesive is recommended
for that material then the limiting factor becomes surface preparation.
Bad or no preparation and ANY substance will fail.


--
MonteP
"Against stupidity, the very gods themselves contend in vain." -
Friedrich von Schiller
"Ignorant voracity -- a wingless vulture -- can soar only into the depths
of ignominy." Patrick O'Brian
-=The answer is simple...send pretzels to the Whitehouse!=-

On Fri, 22 Oct 2004 15:20:03 -0000, MonteP wrote:

Morgan Ohlson wrote in
:

Epoxi is widly spread...

But, sometimes other traits are wished for. Are there any marine
performance (for wood, plastic, ,metalls) glues that (compared to
epoxi) are more...

a) elastic?

b) low density?

c) as epoxi but 1 komponent?

d) how is epoxi lowest density achived ?


Morgan O.

I rely on three main adhesive/sealants Epoxy(with various fillers)
3M5200(CALLED A SEALANT BUT HAS GREAT ADHESIVE QUALITIES) and a product
called MArine GOOP (this stuff looks like that worthless silicon rubber
product, but is nearly as strong as 3M5200 but more elastic)

As for adhesision to various materials, if the adhesive is recommended
for that material then the limiting factor becomes surface preparation.
Bad or no preparation and ANY substance will fail.

Which epoxy fillers do yo like the most?


Morgan O.

Morgan Ohlson wrote in
:

On Fri, 22 Oct 2004 15:20:03 -0000, MonteP wrote:

Morgan Ohlson wrote in
:

Epoxi is widly spread...

But, sometimes other traits are wished for. Are there any marine
performance (for wood, plastic, ,metalls) glues that (compared to
epoxi) are more...

a) elastic?

b) low density?

c) as epoxi but 1 komponent?

d) how is epoxi lowest density achived ?


Morgan O.

I rely on three main adhesive/sealants Epoxy(with various fillers)
3M5200(CALLED A SEALANT BUT HAS GREAT ADHESIVE QUALITIES) and a
product called MArine GOOP (this stuff looks like that worthless
silicon rubber product, but is nearly as strong as 3M5200 but more
elastic)

As for adhesision to various materials, if the adhesive is
recommended for that material then the limiting factor becomes
surface preparation. Bad or no preparation and ANY substance will
fail.

Which epoxy fillers do yo like the most?


Morgan O.


For 'glueing' I generally use a microfiber (like Wests' or similer), for
filling/fairing either silica or microfiber or in some cases the two
mixed 50/50. Silica HAS LESS STRENGTH BUT SANDS EASIER THAN THE
MICROFIBER(damn cap key) I do not like the micro balloon as it leaks and
is very permeable, but it sands really really easygrin

--
MonteP
"Against stupidity, the very gods themselves contend in vain." -
Friedrich von Schiller
"Ignorant voracity -- a wingless vulture -- can soar only into the depths
of ignominy." Patrick O'Brian
-=The answer is simple...send pretzels to the Whitehouse!=-

On Thu, 21 Oct 2004 13:05:25 +0000, Morgan Ohlson wrote:

Epoxi is widly spread...

But, sometimes other traits are wished for. Are there any marine performance
(for wood, plastic, ,metalls) glues that (compared to epoxi) are more...

a) elastic?

Marine silicon sealant is elastic and flexible, and resists high and low
temperatures, but it is not a very good adhesive.


b) low density?

I don't think you can beat filled epoxy. Use West System ultralight
filler, for example, but read up on the warnings before you use it. (It
may not be very heat tolerant, and is not a high-strength filler, for
example.)


c) as epoxi but 1 komponent?


I don't think so. There is such a thing as pre-preg, which is a laminate
material already impregnated with a slow-curing epoxy. I've never used it,
and I don't think it is what you want, but the idea is that you create
your structure then cook it to make the epoxy cure.

d) how is epoxi lowest density achived ?


With fillers.


Morgan O.

--Mac

On Sat, 23 Oct 2004 07:00:45 GMT, Mac wrote:

On Thu, 21 Oct 2004 13:05:25 +0000, Morgan Ohlson wrote:

Epoxi is widly spread...

But, sometimes other traits are wished for. Are there any marine performance
(for wood, plastic, ,metalls) glues that (compared to epoxi) are more...

a) elastic?

Marine silicon sealant is elastic and flexible, and resists high and low
temperatures, but it is not a very good adhesive.


b) low density?

I don't think you can beat filled epoxy. Use West System ultralight
filler, for example, but read up on the warnings before you use it. (It
may not be very heat tolerant, and is not a high-strength filler, for
example.)


c) as epoxi but 1 komponent?


I don't think so. There is such a thing as pre-preg, which is a laminate
material already impregnated with a slow-curing epoxy. I've never used it,
and I don't think it is what you want, but the idea is that you create
your structure then cook it to make the epoxy cure.

d) how is epoxi lowest density achived ?


With fillers.

I saw somewhere a filler namned "fairydust"... is that plastic ballons?
....are they liter compared to glass ballons?

Morgan O.

On Fri, 22 Oct 2004 20:16:17 -0000, MonteP wrote:

Morgan Ohlson wrote in
:

On Fri, 22 Oct 2004 15:20:03 -0000, MonteP wrote:

Morgan Ohlson wrote in
:

Epoxi is widly spread...

But, sometimes other traits are wished for. Are there any marine
performance (for wood, plastic, ,metalls) glues that (compared to
epoxi) are more...

a) elastic?

b) low density?

c) as epoxi but 1 komponent?

d) how is epoxi lowest density achived ?


Morgan O.

I rely on three main adhesive/sealants Epoxy(with various fillers)
3M5200(CALLED A SEALANT BUT HAS GREAT ADHESIVE QUALITIES) and a
product called MArine GOOP (this stuff looks like that worthless
silicon rubber product, but is nearly as strong as 3M5200 but more
elastic)

As for adhesision to various materials, if the adhesive is
recommended for that material then the limiting factor becomes
surface preparation. Bad or no preparation and ANY substance will
fail.

Which epoxy fillers do yo like the most?


Morgan O.


For 'glueing' I generally use a microfiber (like Wests' or similer), for
filling/fairing either silica or microfiber or in some cases the two
mixed 50/50. Silica HAS LESS STRENGTH BUT SANDS EASIER THAN THE
MICROFIBER(damn cap key) I do not like the micro balloon as it leaks and
is very permeable, but it sands really really easygrin

Has any of you tried filling epoxy with the ~4-5mm EPS balls?

It's not strong compared to GRP but it must be many times stronger then a
70Kg/m3 foam.


Morgan O.

Morgan Ohlson ) writes:

Which epoxy fillers do yo like the most?

use of some fillers is "counterproductive"
when resins are used to seal and protect wood.
resins protect wood because resins resist abraision.
that makes cured resins hard to sand because sandpaper is an abraisive.
so people add fillers to make the cured resin easier to sand smooth,
which makes the cured resisn less able to resist abraision,
which is why the resin was applied in the first place.



--
------------------------------------------------------------------------------
William R Watt National Capital FreeNet Ottawa's free community network
homepage: www.ncf.ca/~ag384/top.htm
warning: non-FreeNet email must have "notspam" in subject or it's returned

On 23 Oct 2004 14:00:26 GMT, William R. Watt wrote:

Morgan Ohlson ) writes:

Which epoxy fillers do yo like the most?

use of some fillers is "counterproductive"
when resins are used to seal and protect wood.

Okej, okej... some love wood... ;o)

....but everything isn't wood :o)

resins protect wood because resins resist abraision.
that makes cured resins hard to sand because sandpaper is an abraisive.

Most people building in wood doesn't matter much about weight anyhow...
naturally the lite fillers and the EPS balls are aimed towards liteweight
boats of different kinds.

The balls could... if it works well. be appropriate to reinforece areas
around screw attatchments etc. It should be around 400% stronger the the
lite foams anyhow but only suitable for building ~0,7cm's or somthing
like that.

One could mix ~40% my-ballons with the larger balls ~30% and get a really
lite epoxy to build radius and /or make rounded shapes for ergonomy.

so people add fillers to make the cured resin easier to sand smooth,
which makes the cured resisn less able to resist abraision,
which is why the resin was applied in the first place.

No, thats why PU-coating is on top :o)

My 18' hull is at the moment at around 78Kgs incl. fittings and ballast
tanks. It looks a little like the Wayfarer but has a higher freeboard. I'm a
weigh****cher! The aim was at 70 with a limit at 80...

Morgan O.