Hi,
If you are familiar with WEST, we might advise you to start thinking
about the PRO-SET 117 resin with the four different hardeners which is
specially formulated for infusion processes ...
have a look on http://www.prosetep
for the data-sheets and info ...
more questions please feel free ...
Best regards,
Youri
--- In harryproa@yahoogrou
>
> I would prefer to work with epoxy, as I am fairly familiar with the West
> system stuff. The only downside I have heard is about the viscosity.
I was
> considering using the 209 ultra-slow resin, since that seems to drop the
> viscosity from 900+ to 725 or so, but then I need to be able to hold the
> vacuum for 24 hours to cure. Does anyone here have experience using
the West
> Epoxy with the 206 resin and vacuum infusion?
>
> - Gardner
>
> On Mon, Jun 9, 2008 at 1:31 PM, yaendenboom <youri@...> wrote:
>
> > Hi,
> >
> > Congrats with your decision to build a Hariette to start with, she
> > will be a lovely boat ...
> > To answer your question on the pump ...
> > To begin with there are two kinds of units of pressure expressed in
> > microns, microns of water and microns of Hg (mercury), we suspect
> > these microns are microns of Hg, by the way it is not 0.75 microns but
> > 75 micron, which is a deep vacuum if you consider that athmospheric
> > pressure is 760-770 mm of Hg (mercury) ...
> > But what kind of resin would you use in your infuson ...
> > Polyester, vinylester have high styreen (solvent) content and thud
> > easli "boil" at such high vacuum ... if you would like to have a
> > maximum compression on your laminate you should use epoxy resin. Epoxy
> > has no solvent content and thus can easily be used under such high
> > vacuum ... besides epoxy is superior in mechanical, chemical and
> > adhesion characteristics ...
> > If you have more questions ... feel free to ask them ...
> >
> > Best regards,
> >
> > Youri
> >
> > youri@... <youri%40wangkaboat
> >
> >
> >
> > --- In harryproa@yahoogrou
> > "gardnerpomper" <gardner@> wrote:
> > >
> > > Hi,
> > >
> > > I have lots of questions on how to build a boat, and since it
will be
> > > a harryproa (harrietta to start), and everyone has been so helpful
> > > here, I thougth I would just start a thread.
> > >
> > > Rob has posted in another thread about how to start learning vacuum
> > > infusion, and I am gathering the materials for that. I didn't
realize
> > > that getting a vacuum pump would be so complicated. I don't really
> > > know how to read specs. What is 0.75 microns of vacuum?
> > >
> > > Anyway, I have been looking at ebay motors, at item 190226298481,
> > > which seems an inexpensive pump. Would someone mind offering an
> > > opinion, or an alternative? I don't know how to judge. This is just
> > > for testing and harrietta, not for a "full size" harry.
> > >
> > > Thanks,
> > > - Gardner
> > >
> >
> >
> >
>
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