Re: [harryproa] Digest Number 978

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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