Great Planes Piper J-3 Cub 60 Kit - GPMA0162 - Manual (Page 5)

On our workbench, we have four 11" T-Bar sanders,
equipped with #50, #80, #150 and #220-grit sandpaper.
This setup is all that is required for almost any sanding
task. Custom sanding blocks can be made from balsa for
sanding hard to reach spots. We also keep some
#320-grit wet-or-dry sandpaper handy for finish sanding
before covering.
T-Bar sanding tools are made from lightweight
extruded aluminum and can be found at most hobby
shops. A 2" x 11" strip of sandpaper is attached to the
T-Bar by gluing it on with rubber cement. Apply the rubber
cement to both the bottom of the T-Bar and the back of
the sandpaper. When both surfaces are dry, press the
sandpaper firmly onto the T-Bar. Spray adhesive can be
used for this purpose but it's harder to remove the
sandpaper when you need to replace it.
Wooden sanding blocks can be made from 11" lengths of
1" x 2" scrap lumber. Start on one side, then wrap a sheet
of sandpaper completely around the wood, ending on the
same side as the one you started on. Push 3 or 4
thumbtacks into this edge, then trim off the excess material.
Elev = Elevator
Fuse = Fuselage
LE = Leading Edge (front)
LG = Landing Gear
Lt = Left
Ply = Plywood
Rt = Right
Stab = Stabilizer
TE = Trailing Edge (rear)
" = Inches
Balsa Basswood Plywood
We understand that the caliber of modelers likely to build
the Great Planes Cub 60 may be rather high. You may
already know all about the types of adhesives you like to
use. However, due to its stability and easy building
features, many first time or second time builders may try
their hand at the Great Planes Cub 60. For those modelers
(experts may read along), we have provided some
explanation about the variety of adhesives used during
construction of a model.
Cyanoacrylate or CA glue has changed the way models
are built more than any other advance in modeling
technology. In the good ol' days, model cement like
Ambroid, Duco, Comet and Sigment were the glues of
choice. They all had a strong odor that could cause
dizziness, dried slowly (compared to CA) and became
brittle with age. CA, on the other hand, is stronger, works
almost instantly and is bottled in three different viscosities
(thicknesses). CA is used for most glue joints, except where
epoxy is specified. CA does emit rather strong fumes (some
say it's like tear gas) as it cures, so rule number one is to
work in a well ventilated area. All CA glues work best if
the joints are smooth and fit well.
Thin CA is also known simply as CA. This
is the adhesive that has revolutionized
model building because it allows you to
assemble the parts first, then apply the
adhesive. The thin formulation flows or
"wicks" into the joints and sets almost
instantly, eliminating the need to hold
things together while the glue dries. You
will often use Thin CA for the initial bond, then follow with
medium or thick CA for extra strength, especially when gluing
plywood or hardwood. (Continued on page 8)
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