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 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.



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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 )

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 )

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.