Interesting - Neville and co at the factory are absolutely adamant that
resin and hardener should be well mixed before adding flox, microballoons,
etc. The reason is that the additive might soak up resin or hardener and
prevent a good mix being achieved.
Nev, if you're listening, any thoughts on this?
Has anyone who's used Expancel correctly done any experiments to work out
the ideal ratio of filler to resin by weight?
Cheers,
Jeremy
Jeremy Davey
Europa Monowheel 537M G-EZZA
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Robert Berube
Subject: Re: Europa-List: filler
The commercial shop that we use at Flight Crafters for filling likes the
Expancell supplied with the kit. They have been involved in the boating
industry and their secret to making it work well is pre-mixing. They mix
the expancell with only the resin premeasured and leave it set a minimum or
24 hours and up to 72 hours before using. At the time of use they add the
hardener and a bit of expancell to get the desired consistency. They like
it!
Bob Berube
Flight Crafters
N166BB Conventional Gear
----- Original Message -----
From: "Graham Singleton" <graham@gflight.f9.co.uk>
Subject: Europa-List: filler
<graham@gflight.f9.co.uk>
>
> >Contrary to popular opinion I had trouble with the Polyfiber fairing
> >stuff. It was probably my fault for not heating the mix but I found it
> >hard to mix and it did not mix well so when I applied it there were
> >globs that did not cure and I had to dig them out. I have used supplied
> >epoxy/microballoon since and am happy with it. It takes a bit of
> >practice to mix just right so it sticks and doesn't slump but it is not
> >hard to do and I found it sands just fine. One does have to wait two to
> >three days to sand but then it goes well. (And much less expensive...)
>
> I had trouble with some Superfill but it was very old and near the bottom
> of the tin, probably resin/filler ratio was inaccurate due to settlement.
> It is easier to use though.
> I now use a very sharp wood plane to trim back the filler. Works
> beautifully and takes very thin shavings off just like wood but in any
> direction. I can start cutting back after an overnight cure too. Got that
> tip from here, doesn't one of Bob's boys do it that way?
> Graham
>
>
> ---
>
>
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