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I use this to stiffen up foam - considerably.
Cut a vertical slit in the foam using a knife or (better) a razor saw. Insert strip and pour in thin cyano (foam friendly if not epo) and tape/clamp across joint. It takes a while to set but the increase in stiffness is impressive without adding much weight (the strips are about 8g/metre) and exess cyano will run out.
You can boost the power in a floppy park fly without the wings clapping.
It was delivered in a jiffy bag. looped, with the ends taped together so no additional packaging was required making it cheap to post.
I'll be after some more
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