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 )

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.