E-flite J-3 Cub 25 ARF - Manual (Page 29)

 23. Fit the two wing panels together using the
joiner. The panels must fit together with no gaps.
Sand if necessary for a perfect fit.
Note:.Make.sure.you.are.certain.of.the.fit.of.
the.joiner.before.proceeding.
 24. Mix up 1/2 oz (15ml) of 30-minute epoxy.
Apply epoxy to both the wing joiner and the
joiner opening of both wing panels. Slide the
joiner into a wing panel, and then slide the
remaining panel in position. Use clips and tape
to hold the two panels tightly together until the
epoxy has fully cured.
Note:.Use.rubbing.alcohol.and.paper.towels..
to.wipe.away.any.excess.epoxy.before.it.has.
time.to.cure.
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