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Re: Europa-List: post curing

Subject: Re: Europa-List: post curing
From: Gerry Holland <gnholland@onetel.com>
Date: Wed, 18 Jun 2003 10:50:56

> Tony,
> The resin might go real soft if you ramp up quickly then warp under its own
> weight.

It's also worth keeping an eye on the items being cured at top of
Temperature 'range' if possible. Sometimes 'hotspot' areas form even when
air seems to be circulating well. Often the circulation is shielded by the
conflicting heap of bits for curing so ensure good spacing and no direct
radiation from heat source.

I unfortunately learnt a harder way. My Starboard Aileron  had many degrees
of 'washout' as well as a radical new shape caused by a hotspot from
circulation airflow blocked. In fact the outboard 12" sort of exploded,
bursting out the end lay-up and deforming foam core and surface lay-up.
Fortunately my Inspector had many years of composite production and help me
rebuild it back to normal shaping and strength. Just a warning to be
vigilant but also a reassurance that this is great material to mend!

Regards

Gerry

Gerry Holland
Europa 384
G-FIZY
+44 7808 402404
gnholland@onetel.com




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