Instructions for use

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ORACOVER

APPLICATION INSTRUCTIONS

The polyester model aircraft covering material

ORACOVER is patented WORLDWIDE. It is the easy-to-use, high-tech polyester covering with legendary

strength and astonishing puncture resistance making it suitable for all model aircraft from trainers right

through to huge 1/3 scale models. When attached correctly it will not wrinkle, sag or delaminate.

ORACOVER can be painted, too.

Its polymerized colour-bonded layer tolerates higher temperatures for smooth compound-curve coverage

and permits film re-positioning without fear of colour layer separation. Its wide application heat range makes

for easy, temperature-uncritical covering jobs - with or without the use of a thermometer. ORACOVER 's

colours are completely fade-free, and its rich gloss is designed to give your model the last word in

professional model covering.

Fig. 3 A Temperature test at approx. 90°C

Fig. 1 Recommended tools

Fig. 2 Sand surfaces smooth

Fig. 3C Temperature test at approx 150°C

1. TOOLS YOU'LL NEED (Fig. 1)

 Hobby covering iron

 Cutter bar / ruler / scissors

 ORACOLOR - filler (ref. no. 0999)

 ORACOVER - felt blade (ref. no. 0915)

 Soft cloth / kitchen roll

 Hobby heat gun or paint-stripping gun

 Scalpel (ref. no. 0914) or cutting knife (ref. no. 0916)

 O R ACOVER - iron-on adhesive (ref. no. 0960)

 ORACOVER - special solvent (ref. no. 0980)

2. SURFACE PREPARATION

(Fig. 2)

Take time to sand your model completely. Fill gaps and dents with filler. Finish

sanding with 320 grade sandpaper, always using a sanding block. Completely

vacuum and then wipe the structure free of all dust. If the surface is suitable to

take a finish, treatment of the surface is not necessary. If the surface is NOT

suitable to take a finish we recommend you apply ORACOVER - iron-on

adhesive (ref. no. 0960) first. You can test the suitability by sticking some

adhesive tape on the surface. If you can pull the tape off easily and the

adhesive tape is covered with fine wood particles, prepare the surface as

recommended above.

3. SETTING THE TEMPERATURE OF YOUR SEALING IRON

Correct iron temperature is the key to easy covering with ORACOVER .

Use a pocket or oven thermometer to measure temperature. If you don't have

a thermometer, use the following simple checks to adjust your iron:

A Low Range (90 °C) - Adhesive (duller) side will begin to stick to

balsa (see fig. 3A)

B Medium Range (130 °C) - midway between high and low range

C High Range (150 °C) - at this temperature a scrap of ORACOVER

dropped on the iron (dull side up, see fig. 3C) will wrinkle and distort.

D Foam test - An easy and reliable way to find the 90 °C setting on your

iron is to test the warm iron on a piece of foam. If the foam “squeaks”, but

CAN BE

IRONED ON AND OFF

Summary of content (6 pages)

PAGE 1
AN Y M G ER IN E AD M ORACOVER APPLICATION INSTRUCTIONS The polyester model aircraft covering material ® CAN BE IRONED ON AND OFF ORACOVER® is patented WORLDWIDE. It is the easy-to-use, high-tech polyester covering with legendary strength and astonishing puncture resistance making it suitable for all model aircraft from trainers right through to huge 1/3 scale models. When attached correctly it will not wrinkle, sag or delaminate. ORACOVER® can be painted, too.
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does not melt when the iron only slides over it, the iron has a temperature of 90 - 95 °C. Depending on the type of foam the melting point is between 95 °C and 105 °C. Fig. 4 Wing - do bottom first Note: For especially difficult curves, you can increase the iron temperature from 150 to 200 °C. At 180 °C you can stretch ORACOVER®. Bear in mind that ORACOVER® starts to melt at approximately 250 °C! 4. APPLICATION OVER OPEN FRAMEWORKS: WING (Fig. 4, 5, 7) Cut a piece of ORACOVER® at least 2 cm oversize (Fig.
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5a. COVERING SHEETED SURFACES WITH STYRENE FOAM CORES (Fig. 9a, 9b) Fig. 9a Superheated steam is used in the production of polystyrene foam cores; so many foam wings often contain relatively high levels of residual moisture. At ordinary room temperature a stable microclimate stabilizes inside the core retaining the moisture. That is the reason why moisture even after long periods hardly evaporates from foam cores.
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7. SEAL THE EDGES (Fig. 10a,10b) When you have completed covering the bottom of the wing and sealed the wing tip using a high temperature setting, trim the ORACOVER® to about a ½ cm overlap and seal the edges with the iron (fig. 10a, 10b) - DO NOT shrink ORACOVER® over the framework yet. Fig. 12a For Inside corners, first slit 45°. 8.
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11. HELPFUL HINTS CAMBERED PROFILES (S-SHAPED SECTION) When covering wings with a concave lower surface, tack the ORACOVER® effectively onto all wooden parts at 90 °C - without shrinking. Then shrink the open bay without heating the sealed parts. It may be useful to make a simple cardboard template, to protect the sealed parts of the structure, when using a heat gun. VENTILATION HOLES (PRESSURISATION) When covering open frame structures, tail planes and fins, etc.
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end without trapping air. Larger designs (such as sunbursts) should be positioned and the narrowest end tacked in place. Then, working towards the wide end, iron the design down. Pin striping, etc., can be made by cutting thin strips of ORACOVER®. To apply multicoloured patterns onto a fuselage in open frame structure or a wing (open framework structure), iron the single patterns on the backing paper on a flat table together. The iron should have a temperature of approx. 80 °C.