If:
<<I did the reinforcements 0/90 instead of 45deg. >>
then (assuming 2 plies of reinforcement had been applied) one additional ply
at 45 deg should provide equivalent strength to 2 at 45 deg. This would
avoid the need to risk further damage in removing the erroneous plies.
Subject to approval of your respective design/regulatory authority!
Duncan McF
----- Original Message -----
From: "Graham Singleton" <graham@gflight.f9.co.uk>
Sent: Sunday, January 15, 2006 11:05 AM
Subject: Europa-List: Re: Europa-List Digest: 7 Msgs - 01/14/06
> <graham@gflight.f9.co.uk>
>
> From: "William Daniell" <wdaniell@etb.net.co>
> Subject: Europa-List: Wing skin separation HELP
>
>
> I have made an error in construction in the interior of the wings and very
> cleverly close then (with the error inside).
> Will
>
>
> Will
> You have some work to do :-( . This is what I would do, but always get a
> second opinion. (I am old and daft ;-) according to some (my wife among
> em)
> You need to heat the Redux to around 120 deg C to soften the Redux and
> ideally it needs to be done quickly so that not too much heat gets to the
> rest of the structure. It won't melt, it just goes soft. You need a hot
> knife to slip between the joint. Start at the trailing edge, look for any
> area where the bond isn't prefect and atart there. Find a good quality
> table knife, one of the old fashioned thin springy ones that are perfect
> as spatulas, used to be made here in Sheffield England. (I hate the modern
> clumsy stiff ones >:o )You might find a Weller solder gun with a knife
> blade, failing that heat the knife then slip it in and cut, reheat and do
> it again. Once you have a legnth apart slip a wooden wedge in to spring
> the skins apart but gently!!!
> When you have the skin off, use a hot air gun on the reinforcement and use
> similar methods. You might be lucky and find you can pull the cloth off
> with pliers and hot air. Failing that a sharp wood chisel lightly tapped
> between, again with hot air but remember, each time you heat (post cure!)
> the new laminate gets stronger.
> best of luck
> Graham
>
>
>
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