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COVERING
146.
In this step you need to cover all the parts of your model with the covering material of your choice, before proceeding on to
Final Assembly of the model.
General Notes
There are many different covering materials available for finishing model airplanes. They range from raw coverings that
must be bonded to the structure with adhesive and then painted; to iron-on plastic materials that have the color and finish
built right in. The choice of which type of covering material to use on your KADET LT-40 is a matter of personal choice.
However, if this is your first model airplane, we recommend that you chose one of the popular pre-finished iron-on plastic
film coverings. This type of covering material provides a high gloss, durable finish that is easy to apply and repair. It goes
on relatively quick and is not near as messy or smelly as using a covering material that must be painted. All of the KADET
LT-40 prototypes built here at the SIG factory were finished with SIG SUPERCOAT IRON-ON PLASTIC COVERING.
Since all iron-on plastic covering materials come with detailed step-by-step instructions on how they should be applied, we
will not go into a repetitive step-by-step sequence here. We will instead outline some ideas that are specific to the KADET
LT-40. Be sure to read all the instructions that come with your covering material and follow them carefully.
NOTE: There are also complete books and video tapes available on applying iron-on covering materials. These
sources can be very helpful, providing a lot more tips than we can cover in this instruction book. Often times, the
video tapes can be rented or borrowed from your local hobby shop or model airplane club.
Choice of Color Scheme
One of modeling’s pleasures is the chance to decorate your model to suit your
own taste. There are a huge variety of after-market items available in the hobby
shops to dress up your airplane. Striping tapes and trim sheets in every color of
the rainbow, stick-on decals and markings, are all available and easy to apply.
You can go for a military look, a Cessna-like civil aviation look, or something
totally wild in vivid neon colors. Your imagination is the only limit!
If this is your first model, our advice is to keep the color scheme simple and
visible. The most economical way to go is to choose one primary color for the
entire model (see "COVERING CUTTING DIAGRAM"). Choose a light color! Covering the entire model in black, dark blue,
gray, etc., is not a good choice. In the air a dark colored model will quickly turn into a black silhouette, and it will be difficult
to distinguish which way the airplane is going. A light color is more visible at greater distances! White, yellow, orange,
cream, and neon colors are excellent choices for a trainer model.
Kit Color Scheme
The KADET LT-40 kit includes two sheets of stick-on decals to duplicate all the markings on the fuselage and fin of the
model shown on the kit box label. Whether or not you use these decals is your choice. We think they give the KADET LT-
40 a "civil aviation" look, and that’s what we wanted. You may want something totally different!
No decals are included in the kit for the wing. On our kit box model, we covered the back part of the wing with white
covering material, and then covered the front part of the wing with black covering. The black covering overlaps (3/8") onto
the white covering on top of the main spar. Red striping tape was used for an accent stripe. If you want to make your
KADET LT-40 wing look the same as ours, it will cost you one more roll of covering material (black) and take more time
than if you make the wing all one color. The choice is yours! The wing covering instructions further on will assume that you
are covering your wing the most economical way - in all one color.
Surface Preparation
A good covering job starts with good surface preparation! Regardless of what
type of covering material you use, it won’t hide poor workmanship. Finish sand
the entire model with 220 grit sandpaper. Fill any holes, gaps, nicks, or dents
on the surface of your model with a light-weight filler. After the filler dries, sand
off any excess flush with the surface. Regular household "wall repair" or
"spackling" compound (3M, Red Devil, DAP, etc.) works well for this, or you may find a suitable "model filler" available
in your hobby shop. Just make sure that whatever filler you use is light weight and sands easily.
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