1/4 inch (6mm) thick??? Surely you jest.
Best regards,
Rob Housman
A070
Airframe complete
Irvine, CA
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com]On Behalf Of John & Amy Eckel
Subject: Re: Europa-List: filler
Jeremy,
Although I am not up to using expancel yet I agree with Neville and Co. that
mixing the epoxy before adding filler is a very good idea.
I asked Neville if there was a recommend weight ratio to the expancel and he
said to mix it until it is like bread dough, then apply a very light coating
of epoxy
to the surface and put the mixture on about a 1/4 inch thick ( 6 mm). This
way a second coating should not have to be applied. It is good to avoid a
second coat because if the hardness is different, which it will be, it will
show
up in the finished product. He said it will sand like balsa wood. I plan
to
experiment with my practice rudder. I have a practice one because I was
lucky enough to build a second one.
I do plan to work out an epoxy to expancel ratio.
John
----- Original Message -----
From: "Jeremy Davey" <jeremycrdavey@btinternet.com>
Subject: RE: Europa-List: filler
<jeremycrdavey@btinternet.com>
>
> 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
> To: europa-list@matronics.com
> Subject: Re: Europa-List: filler
>
<bberube@tampabay.rr.com>
>
> 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>
> To: <europa-list@matronics.com>
> 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
> >
> >
> > ---
> >
> >
>
>
|