[86mm] from the tip of the wing to the bench. The dihedral is
not critical. A measurement between 3" [76mm] and 3-5/8"
[92mm] is acceptable.
❏
4. Mix approximately 1/2 ounce of 30-minute epoxy.
Apply a liberal amount of epoxy into the joiner pocket of
each wing, the root rib of each wing and the joiner. Insert the
joiner into the right wing and then slide the left wing onto the
joiner. Push the two wing halves firmly together. Clean
excess epoxy from the wing surface with rubbing alcohol.
Hold the wing halves together with masking tape until the
glue has completely cured.
❏
5. Locate the
wing bolt plates
. Cut the covering from the
holes in the wing. Place the plates in position on the bottom
of the wing at the trailing edge as shown. The offset hole
must be towards the wing tip. With a fine-tip, felt-tip pen,
draw the outline of the plates onto the wing. Using a sharp
#11 hobby blade or the
“Expert Tip”
that follows, carefully
cut the covering from the wing.
Be careful to only cut
through the covering and not the wood!
❏
6. Glue the wing bolt plates to the bottom of the wing with
6-minute epoxy. Be sure that you are careful to align the
holes in the plates with the offset holes toward the wing tip.
❏
7. Remove the components from inside the plywood
aileron
servo tray
. Set them aside.
Use a soldering iron to cut the covering from the stab. The
tip of the soldering iron doesn’t have to be sharp, but a
fine-tip does work best. Allow the iron to heat fully. Use a
straightedge to guide the soldering iron at a rate that will
just melt the covering and not burn into the wood. The
hotter the soldering iron, the faster it must travel to melt a
fine cut. Peel off the covering.
HOW TO CUT COVERING FROM BALSA
7
