We too had problems with uncured superfill. The Blue stuff was very dry in the
first 2 pots we had. This made up the areas that we had to dig out. Quite alot
on our wings actually. The problem was kind of half recognised by Polyfiber. I
was told that there was a problem with some batches of blue being too dry but
that that would not cause the stuff to refuse to set! I am not so sure about
that.
The newer batches are fine.
I too have tried the microbaloons that came with the kit, but found that it was
a real bas***d to apply and sand. I would still go with Polyfiber even after
the problems that I had with a couple of pots. It just sands so well!
Eddie
Quoting Graham Singleton <graham@gflight.f9.co.uk>:
> <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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>
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