-You still need to have significantly reduced presure to hold a good
contact while it cures, but certainly not as low as needed in the
infusion process.-- In harryproa@yahoogrou
<pramsec@...
>
> harryproa@yahoogrou
>
> > Gardner Pomper wrote:-
> >
> >>
> >>
> >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.
> >>
> G'day Gardner,
>
> I think you will find, when you have done the introductory course on
> infusion methods,
> that you do NOT have to hold the vacuum for 24 hours, but only long
> enough to allow
> the resin to infuse into the panel material. This usually takes
about
> 20 minutes with vinylester
> and may be a bit longer for low viscosity epoxy.
>
> Once the whole panel is infused and the resin begins to creep into the
> suction pipe it is time to
> turn off the taps and stop the vacuum pump. The twenty four hours is
> then allowed to let the
> resin cure, usually under a blanket.
>
> Regards,
> Peter Raymond
>
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