FABRIC COVERING PROCEDURE
Optional Preparation:
The camouflage fabric is printed on Solartex fabric. The light weight of the fabric limits the optical density of
the finished print. If you want to hide the underlying wood structure prepare the model as follows.
Sand and paint all wood surfaces with white or light grey primer. Remove the protective backing on the
adhesive side of the fabric and paint with a light coat of primer (on top of the adhesive). This hides the visibility
of the wood grain through the thin fabric and increases the opacity of the material to give is a more realistic
finish.
Don’t worry about covering the adhesive it will liquify and penetrate the primer when you apply the
heat.
1.
Brush a thin coat of BALSALOC (or BALSARITE) with a soft brush on balsa, let it dry and sand it with 220
paper.
2.
Brush a second thin coat of BALSALOC and let it dry. Do not sand.
3.
Cover the bottom of the wings, fuselage…etc. first with an un-socked, well-temperature-controlled iron at
100-120 C (21 century iron is recommended). Clean the bottom of the iron often with acetone to remove
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residual primer.
4.
Refer to your scale documentation for the proper orientation of the fabric pattern. Any overlapping fabric is
about ¼” join, and BALSALOC has to be brushed on the overlapping section of the fabric and let dry before
applying iron. The iron temperature is still as shown below.
5.
If wing under camber is too much, one has to glue the fabric to the lower wing rib by tiny drops of thin CA.
Otherwise, fabric may delaminate from the rib during shrinking stage.
6.
Once the entire aircraft is covered, the preferred method is still the iron unless the part to be shrunk is highly
unreachable. In case of iron, an iron sock has to be used and the temperature should be kept as shown or
slightly higher if the sock is wet. This fabric shrinks very fast after a certain threshold temperature.
Therefore, once one sees the material starts shrinking he has to move to the adjacent areas and let the first
area cool before going over for a second time to shrink the fabric further. Keeping the iron on the same area
too long will cause fabric to pull off from balsa or worse, lozenge colors may start running uncontrollably.
7.
The seams on the wing should be covered with either pink, light purple or light blue 21 century fabric or
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Arizona Models Rib Tape.
8.
Markings are painted on using Sig’s butyrate color dope or Krylon paint.
9.
A light MIST of Sig’s butyrate clear dope is sprayed over the entire aircraft for protection against glow fuel
and also to prevent material to sag (it shrinks the fabric further when the dope dries). Too much dope will
cause the fabric colors to start running so extra care is needed here.
10.
To weather the fabric small amounts of graphite powder (this material is used for lubricating keyholes…etc.
and readily available in hardware stores) is rubbed against fabric. When desired amount of grime and dirt is
achieved brush off the excess powder. One needs to spray a second MIST of dope to keep the graphite
powder on fabric, and to further protect fabric against hot glow fuel.
Содержание Hansa Brandenberg W.29
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