Laminating resin not setting hard


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John Hovell
John Hovell
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Help please. I make model glider wings by vag bagging carbon onto foam cores. Whilst in general I am very pleased with the result I find that handling the wings leaves finger prints on the surface, even a week after making it. I use the EL2 laminating resin wing the slow hardener. The model is vac overnight at an elevated temp (Electric blanket). It is then stored at room temp. Can you advise how to avoid this please?


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jeffrey bres
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John Hovell - 4/19/2021 6:54:28 PM
jeffrey bres - 4/18/2021 8:32:06 PM
Besides washing youre hands hahaha

I geuss it all comes down to mixing the epoxy.
El2 needs a 10 to 3 resin to hardner ratio.   99% of all resins here in holland and germany are 2 to 1.   This can allso lead to a soft surface.


Jeff, must wash more often, other people have also told me that!

on the serious side - it was mixed properly and this always happens.  I have friends who have the same issue.  My guess is that you have to leave it a very long time to fully cure, than add a wax polish to protect the surface from the acid sweat on your figures.  This is not vey practical as I want to get on with the build and don't want to wax the surface as I still need to glue accessories to it.

I'm hoping the staff can advise on the best way to quickly get a fully cured surface.

Thanks

I know but im only allowed at X mass. 
 I never had this isseu with epoxy.  I did notish it cures slower when in a vacuum. 

GO

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