Great Planes Spirit 100 Sailplane Kit - GPMA0550 - Manual (Page 23)

as much pressure (clamps, clothespins, weights, etc ) as possible
while the glue is curing and be sure to accurately line up the two
pieces Glue two more 1/16 laminations to the each side of the
now 1/8 thick lamination using the same procedure
D D 15 Locate two of the 1/16" Ply Joiner Box Sides
(SPTlW11) that DO NOT have an "S" embossed on them Hold
one of the sides in place on the front of the spars at the "root"
(inner) end of the panel and mark approximately 1/32 in front of
it Now cut along this line and the spar to remove a 3/32 wide
strip of wood from the root of the panel to the first W2 rib Scrape
off any glue or balsa wood may still be on the spar with the back
edge of an Xacto knife IMPORTANT - Be sure to get the edge
of the spar "clean" as a good glue joint between the spar and the
joiner box side is of utmost importance
"joiner box" The spars should fit snugly down on the wing
joiner but make sure the joiner is not holding the spars above their
normal position If it is, remove the joiner and sand it until it fits
correctly
D D 17 Remove the clamps and the joiner and apply a bead
of epoxy along the spar edges Install the sides and hold them in
place with the C1 clamps A good glue joint is imporiant here but
be careful not to gel any excess glue inside the box formed by
these sides or the wing joiner will not fit inside Insert the joiner
into the box and then remove it a couple of times to scrape any
excess glue out of the box Wipe any glue off the joiner before it
cures
D D 18 Sand the edges of the joiner box sides lo remove any
sharp comers or glue globs Wrap the entire joiner box with a
strong thread (2 4 lb fishing line works well) The thread should
be tightly wrapped and closely spaced near the root end, but it can
be spaced farther apart as you get closer to the W2 rib Do not
allow the thread to overlap or it will build up in thickness and the
top sheeting will not seat properly on the spar When finished
wrapping, soak the entire thread with CA HINT - It will take at
least 15 feet of thread to properly wrap each joiner box
DD 16 Test fit the two joiner box sides in place One side
should be installed on the front of the spars and the other on the
back Notice one end of the side is slanted at a 3-1/2 degree angle
The "long" edge of the side should be at the bottom Use the C1
clamps (SPT1W22) to hold the sides in place and test fit the wing
joiner into the box formed This "box" will be referred to as the
D D 19 With the wing panel over the plans for reference,
glue W2A and the W2B (SPT1W04) in place
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