GRAUPNER SEA FURY 9354 Assembly Instructions Manual

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Re: Order No.

9354

Assembly instructions

SEA FURY

For two-stroke motors up to about 20 cm³ displacement

and

Electric motors

Requires a HoTT radio control system with 6 functions

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Specification

Wingspan about 1800 mm
Fuselage length without spinner about 1480 mm
Wing area about 66.6 dm²
All-up weight depending on equipment about 6200 g
EWD electric speed monitor about 0.5-1 °
Centre of gravity about 145 mm behind the leading edge to the right and left of the
fuselage

Yaw and pitch deflection of the propeller shaft is preset.
Note: This model is not a toy!

If you do not have experience with such motorised models, please ask experienced
model flyers for help. If the model is operated without the proper knowledge, injuries
can result. Think of your health and safety!

Important! Before you start the assembly!

Even if you have already built lots of RC models, read these instructions through
carefully. A lot of effort was made to keep things as simple as possible without
neglecting safety.
Check for correct functioning and range before every flight. At an appropriate
distance, make sure that all the control surfaces are working properly and deflecting
in the correct direction.
The first time you control a model aircraft, it is best to ask an experienced person to
help you with the pre-flight check and during the first few flights.
RC parts and rudder linkages are built in during assembly as per the corresponding
construction stages. Later installation is not possible – or only with great difficulty.
When buying a radio remote control unit, make sure that transmitter and receiver are
suited for aircraft models and are approved by the German postal and
telecommunications authority, and that they have an FTZ inspection serial number.
In the frequency ranges for radio remote controls, other radio systems and high­frequency equipment are operated. Therefore, no protection can be provided against
interference by such devices.
Additional information on this topic can be obtained from the local office of the
telecommunications authority or from a model shop.

Note on the covering sheet

As a result of intense weather changes (temperature, humidity, et cetera), small
creases can form in the covering sheet. In rare cases, the components can even be
warped. This lies in the nature of wood construction with covering sheet. This can be
corrected as follows using a hair dryer or foil iron like those available to model
builders.

Creases: Blow with hot air and rub with a soft cloth.
Warped wings: Gently twist the area against the direction of warping and smooth it

out again using an iron or hot air.

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Caution! Never use more heat than is absolutely necessary. If the iron is too
hot, the covering sheet will melt and holes will form.
The extensively pre-fabricated model can be built in a very short time.
However, the remaining steps are important and have to be carried out with
care. Doing this work properly determines whether the model will have the
prescribed rigidity and flight characteristics; so please work slowly and
precisely!
When putting screws into wood, apply a little casein glue to keep them from
loosening: Squirt casein glue into the drill hole and screw in the screw. All
metal bolts and nuts should be secured against loosening with thread lock
fluid, such as "UHU schraubensicher."

Other required accessories
Motor and accessories

Motor
Order No.

Drive battery
Order No.

Spacer
Order No.

Speed
controller
Order No.

Propeller
Order No.

GRAUPENR
COMPACT 640Z 20.6
V

7779

7655.4

(2 required)

- 7228 1326.18x10

OS MAX FS 91
SURPASS II-P
including Silencer

1894

- - - 1314.18x10

OS MAX 120AX
including Silencer

2703

- 2703.36A - 1314.15x10

OS MAX FS 120
SURPASS-E including
Silencer

1848

- - - 1314.14x7

OS MAX FS 120
SURPASS III incl.
Silencer

1886

- - - 1314.14x7

OS MAX FS 91
SURPASS II including
Silencer

1926

- - - 1314.13x10

Radio control system
It must have at least 8 channels and 5 servos. Furthermore, the transmitter
must be capable of servo rotation reversal.

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Particularly recommended: Computer-System from MX-16 to mc-24. For rudder,
elevators, ailerons, airbrakes, and engine throttle, servos with standard dimensions
are installed.
For the retractable undercarriage, the design calls for servos measuring 13 mm in
with and about 54 Ncm.
Each of the two aileron servo cables, needs an extension cable, Order No. 3935.50
to extend them.

As receiver battery, we recommend: LiPo 2/1600 Order No. 9717.2 in connection
with the ON/OFF switch PRX 3A Order No. 4135, which has to be carefully serviced
before and after all flight operations.
In this regard, see also the instructions for the RC system, batteries, et cetera.

To connect the servos for ailerons, airbrakes, and retractable undercarriage, insert
the 180 mm extension cable into the corresponding socket on the receiver. To store
the receiver and battery, for example cellular cauoutchouc (rubber), Order No. 1637
is needed.

Adhesives

Casein glue, such as UHU coll, Order No. 958.60
UHU hart, such as Order No. 534.35
Fast setting glue, such as Order No. 5822
Thread lock fluid, such as Order No. 952

Accessories for operation with internal combustion engine (not included)
Fuel with synthetic oil, depending on the motor used
Fuel filter, such as Order No. 1650.1
Fuel hose, such as Order No. 1643
Manual fuel pump, such as Order No. 1610
Spark plug battery with spark plug clip, such as Order No. 3253
Electric starter, such as Order No. 1628
Starter battery such as Order No. 2592

Accessories for operation with electric motor (see table)
Chargers, see main catalogue FS
Required tools (not included)

Various (Philips) screwdrivers, flat-nose pliers, wire cutter, balsa knife or razor blade,
various drills, universal spark plug wrench, soldering iron, various Allen wrenches.

Do not begin the assembly until you have familiarised yourself well with the
components and the individual construction stages. If you are not satisfied with any
component, report it to your retailer before you start the construction process.

Assembly of the SEA FURY 1800

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The wing halves

The servo lever, Order No. 3544, as shown in the photo, needs to be shortened on
one side and, with the servo in the centre position, mounted on the drive shaft of the
servo, or 7907.1 can be used.

Place the servos in the centre position using the receiver system. Fasten the servo to

the attachment block using the screws

included with the servos. To do so, insert the rubber grommets with the brass hollow
rivets, collar downward, into the servo flange. For drilling Ø 1.5 mm holes for the
screws, the hollow rivets can be used as a drilling template. To make it easier to push
them in, the hollow rivets can be placed onto a screwdriver of the proper size.

Now the servo cables are pulled into the wing halves and tailplane halves using a
thin string. Just behind the connector, tie the string to the cable and pull it in so that it
comes out the wing root.

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The servo mounts are again fastened in the wing halves with the screws included.
Using sandpaper or sanding block, sand the control horns on the surfaces to be

glued in order to achieve an adequate connection when gluing.

As seen in the photos, unstick the slots for the GRP control horns, put a dab of glue
into the slot, and push the control horn in until it stops.

Wipe off any excess glue.

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As shown in the photo, countersink the drill holes in the landing gear hinges.

Fasten the landing gear to the wings using the hinges.

Now the rudder linkages are prepared. Adjust the length of the linkages so that the
rudders are in neutral position when the servo is in the centre position; for ailerons
M3x80 mm, for landing flaps M3x90 mm, for retractable undercarriage M3x70 mm.

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The two-part landing flaps are connected using the GRP connector. As shown in the
photos, slide in the connectors and glue them into a flap.

Installation of the landing gear

As shown on the photos, install the landing gear in the wing using the four sheet
metal screws; likewise for the servos. For the attachment screws, pre-drill a pilot
hole.

The steering linkages must be adjusted so that the retractable undercarriage can be
locked in the extended and retracted positions.
Now the landing gear covers can be installed / glued on. As a test, place the covers
onto the landing gear legs, glue on with a few drops of fast setting glue, and align
them while in the retracted position. Now extend the landing gear again and glue
them onto the legs of the landing gear using Stabilit Express.

Now the wheels can be attached using the wheel axles.

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To do so, push the wheels and adjustment rings onto the axle. Secure the grub
screws using UHU schraubensicher thread-lock fluid.
As shown in the photo, screw the tailwheel to the bulkhead.

Place the clevis into the outer drill hole of the steering lever. Secure the attachment
screw of the steering level with UHU schraubensicher thread lock fluid. Cut the cover
to fit precisely and glue it to the fuselage with transparent adhesive film.

Installing the internal combustion motor

As shown in the photo, use the screws provided to attach the internal combustion
motor to the two motor mounts so that the interval between the driver disk and front
bulkhead is about 150 mm.

Before fastening to the fuselage, the throttle linkage is placed into the drill hole on the
carburettor lever and run through the front bulkhead to the throttle servo.

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Servos for the rudder and elevators as well as the motor throttle must attached using
the bolts included with the servos.

The length of the rods must be adjusted so that when the control surfaces are in
neutral position, the servos are also in neutral position. The throttle rod is adjusted so
that the carburettor is half open when the servo is in centre position.
Depending on the motor used, the necessary cut-outs for the cylinder head, silencer,
et cetera, must now be cut/filed in the engine bonnet.
To attach the engine bonnet to the fuselage, the four attachment points also have to
be marked on the engine bonnet. To do so, cut four strips of scrap wood and drill a Ø
3 mm hole in each one as shown in the photo.

Now each strip is fastened to the
fuselage using an M3 Allen screw and taped in place as shown in the photo.

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Unscrew the Allen screws, then push up the engine bonnet so that it moves under
the strips and the spinner base plate is about 1.5-2 mm from the engine bonnet. In
this position, mark the four attachment points on the engine bonnet.

The engine bonnet is attached with four Allen screws as shown in the photos.

Now the spinner and propeller can be installed.

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Assembling and installing the fuel tank

Slip a piece of plastic tubing (about 160 mm long) onto the fuel tank clunk pick-up.
Push the free end of the fuel tubing onto one of the tubes in the fuel tank stopper so
that the pick-up will be able to move freely inside the tank later on without binding or
jamming when the stopper is in place. Use a heat-gun or lighter to gently heat the free
plastic tubes so that they can be bent easily. One tube should face down and will be
used later to fill the tank; the other one points upward and serves later as the overflow
when the tank is filled. Extend each tube with a piece of fuel tubing so that they extend
to the top and bottom of the tank, respectively.
Now push the tank stopper over the throat of the fuel tank, and tighten the Philips-head
screw to fasten the stopper in place. It is important to tighten the screw so that the tank
is completely sealed. This can be checked by holding the tank under water. Hold it
under water and blow air into it. If the tank is sealed, there will be no air bubbles.

Connect a further length of fuel tubing to each stub tube projecting from the fuel tank.
Mark the silicone tubes with a felt marker to show which runs to the motor, the
overflow, and the filler.
The tube from the clunk is then connected to the carburettor, while the overflow is run
downward. The fuel filler tube can later be routed out through a drill hole in the
engine bonnet. After filling, it should be sealed with a plug.
The attachment block is fastened with two screws.

Installation of the electric motor

Install the electric motor in the motor mount as shown in the following photos. Use
UH schraubensicher thread lock fluid to secure the bolts against loosening. Glue the
motor bulkhead in the motor mount so that the interval from motor mount base plate
and spinner base plate is about 150 mm.
After the glue hardens, the motor mount can be bolted to the fuselage.

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In the electric version, the engine bonnet needs no additional cut-outs. The engine
bonnet is fastened as already described for the installation of the internal combustion
motor.

Gluing on rudder and elevators

Place the tail fin onto the surface of the fuselage and centre it on the fuselage so that
it extends equally far to the left and right and, when viewed from above, forms a right
angle with the longitudinal axis / midline of the fuselage.
With a felt pen, transfer the fuselage contour to the underside of the tail fin.
Use a hot soldering iron to melt through the covering sheet somewhat smaller than
drawn. (Make sure the soldering iron used is too hot; the heat should be just enough
to melt the sheet.)

Apply glue and then glue the tail fin to the fuselage. Examples of glue that can be
used are UHU coll and UHU hart. Align the tail fin to the fuselage as described at the
beginning of the section. Secure the tail fin against slippage until the glue hardens.
After the glue has set, place and fit the horizontal stabiliser onto the tail fin; to do so,
take off the rudder by pulling out the positioning wire. In this position, use a felt pen to
transfer the outer contour of the horizontal stabiliser to the tail fin.
Here, too, melt through the covering sheet somewhat smaller than drawn and
separate it from the tail fin. Glue the horizontal stabiliser in place.

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Secure the horizontal stabiliser against slippage until the glue hardens.
After the glue has set, use the positioning wire to reinstall the rudder in the tail fin.

Glue the pilot figure and head rest into place as shown in the photo.
Experience has shown that the pilot figure can be secured using double-sided tape,
Order No. 2904. The head rest can be glued on using UHU ALLESKLEBER Kraft all
purpose adhesive.

The cockpit canopy is glued to the fuselage using transparent adhesive film and also
secured on the right and left using four pan-head, self-tapping screws.

Installing the switch in the fuselage

The ON/OFF switch for the RC system (PRX 3A) can be installed on the right or left
fuselage side wall. Use a hot soldering iron to melt through the openings for the slide

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switches and the diode. Use the screws that come with the switch to install it in the
side of the fuselage.

Assembly of the SEA FURY 1800

To connect the control surface servos to the receiver it is recommended that an
extension cable Order No. 3935.18 be inserted into the corresponding receiver
socket. The receiver battery is placed upon foam material and attached to the
fuselage so that it can not slide. Connect the halves of the wings using the connector
tube; connect the connecting cables of the control surface servos using the extension
cables. Attach the wing to the fuselage so that the two dowels fit into the drill holes in
the bulkhead. Now screw in the two plastic screws so that the wing is fastened firmly
to the fuselage.

Place the fuselage cover onto the fuselage opening so that the two pegs fit into the
holes in the bulkhead. The fuselage cover is fastened by snapping the two spring­loaded locking mechanisms into place.

Balancing the SEA FURY 1800

Support the model to the left and right of the fuselage (wing attachment) about 145
mm behind the leading edge of the wing. If the centre of gravity is correct, the model
should balance out horizontally or with the nose pointing slightly downward.
If necessary, adjust the centre of gravity by shifting the position of the receiver
batteries or taping on trim weights.
Before flying the aircraft, set the transmitter trims to centre and ensure that all the
control surfaces are also exactly centred (in neutral position).

Rudder deflections

Ailerons 30 mm up and 20 mm down )
Elevators 30 mm up and down ) exponentially 30%
Rudder 40 mm left and right )
Landing flaps Take-off 15 mm down
Landing 80 mm down
These rudder deflections are only recommendations - the deflections must be
adapted to your individual needs.

Important:

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When assembling the rods, always take care to ensure that they move freely and can
move through their entire controllable path - including trim travel - and are not
mechanically impeded.
When the joystick moves to the right, the rudder must turn to the right (left stick/left
rudder). When the elevator stick is moved back toward the belly, the elevators must
deflect upward. If the stick is moved forward, the elevators must deflect downward. If
the aileron stick is moved to the right, the right aileron should move upward; the left
aileron downward. When the throttle stick is pushed forward, the motor must run at
full power; if the throttle stick and trim are moved back to their end-points, the engine
must stop. If the trim travel is moved all the way back, the motor must stop. The
landing flaps are best activated via a three-position switch.

Now have fun flying your SEA Fury 1800!

Safety tips and warnings for motorized aircraft models with internal

combustion engines

Before you first attempt to fly the model, it is essential to carefully read all the
operating and assembly instructions.
These safety notes are part of these instructions and must be stored carefully
with the operating instructions and, if the model is passed on to others, they
must also be passed on to the next user.
Motorised models are very demanding and dangerous objects and require that
the user have great expertise, skill, and a sense of responsibility.

Motorised models are not suitable for persons under 18 years of age.

They may be operated only under the instruction and supervision of an adult
who is familiar with the attendant hazards.

The operator of the model must be in full possession of his or her bodily and
mental faculties. As with car driving, operating a model aircraft under the
influence of alcohol or drugs is not permissible under any circumstances.

Radio controlled aircraft models may be used only for the purpose intended by
the manufacturer; meaning not as a sporting device designed to carry people.
Any other use is forbidden.

A model can only work properly and fulfil your expectations if it is built or
assembled with the greatest of care and in accordance with the assembly
instructions. Independent changes in design or materials are not permitted. To
avoid injuring people and damaging property, it is essential to be careful and
thoughtful when operating your model. Nobody would climb into a full-size
glider and attempt to fly it without undergoing training beforehand. Model
flying is also something that has to be learned! We suggest that you ask an

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experienced model flyer for help, or join a model club or model flight training
school. Your local model shop and the specialist magazines are excellent
sources of information.

Always observe the information on the centre of gravity and on control surface
deflection! The model must be adjusted accordingly.

• Radio control system: Make sure the frequency used is vacant. Do not

switch on until you are sure! Check the RC system frequently; it too is
subject to wear. Radio interference caused by unknown sources can occur
at any time without warning. Your model will then be uncontrollable and
completely unpredictable. Never leave your radio control system
unattended, as another person might pick it up and try to use it. To ensure
proper operation of your RC system, make sure that the batteries are kept
fully charged.

Do not ignore warnings! They refer to materials and situations, which, if
ignored, can - in extreme cases - result in fatal injury or permanent damage.

You alone are responsible for the safe operation of your model and motor.
Questions regarding the safe operation of model and motor can be answered
by your retailer.

• Propellers and all rotating parts that are powered by a motor pose a

constant risk of injury. Do not touch them with any part of your body! For
example, a propeller spinning at high speed cut off a finger!

• Always keep well clear of the rotational plane of the propeller! You never

know when some part may come loose and fly off at high speed and with
great energy, hitting you or a third party. Make sure that no other object can
come into contact with the rotating propeller.

• Be careful with loose clothing, such as scarves, loose shirts, et cetera: They

can be sucked in by the propeller stream and get in the way of the propeller
itself.

• If there are passers-by or spectators at your flying site, make sure that they

are aware of the dangers inherent in your activity before you start the
motor, and insist that they keep a safe distance away (at least 5 m).

• Model aircraft may be flown only at "normal" outside temperatures,

meaning in a range of - 5º C to + 35º C; more extreme temperatures can lead
to changes, for example in battery capacity and material characteristics, et
cetera.

• Model fuel is poisonous! Do not let it come into contact with eyes or mouth!

Store only in clearly marked containers out of the reach of children.

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• Never run the motor in closed rooms, such as basement, garage, et cetera.

Model motors also produce deadly carbon monoxide gas.

Operate only outdoors!

• Adhesives and paints contain materials which may be hazardous to health

under certain circumstances. You should therefore observe the notes and
warnings supplied by the manufacturers of these materials.

• Model fuel is highly flammable and combustible; keep away from open

flames, excessive heat, any sources of sparks or other things that could
lead to ignition. Do not smoke in the direct vicinity of fuel or fuel fumes.

• During operation, a model motor develops a great deal of heat. Motor and

shock absorbers are therefore very hot during operations and for a while
afterwards. Touching them can result in serious burns. Careful when
making adjustments! Wear protective gloves! In extreme cases, even fires
can be caused.

• While operating the motor, not only poisonous and hot exhaust emanates

from the exhaust pipe but also very hot liquid combustion residue, which
can result in burns.

• After operation, remove residual fuel from the tank and motor.

• Every time you intend to operate your model, check carefully it and

everything attached to it (for example propellers, control surface linkages,
rudders, et cetera) for possible damage. If you find a fault, do not fly the
model until you have corrected it.

• The motor is started with an electric starter, which may be equipped with an

adapter that fits the model. For fixed-wing aircraft, startup aid can also be
provided, for example, by a wooden rod with a piece of water hose attached.

• During operation, model motors may develop noise far greater than 85 dB

(A); always wear protection for your ears. Never start motors without a
silencer. However, even with a silencer, model motors can disturb
neighbours. Don’t run motors when people expect peace and quiet.

• If the propeller is turning while the model is standing on sandy ground, for

instance, the propeller can suck up sand and dust and hurl it around, and it
could get in people's eyes. Wear protective goggles!

• Take care that neither the spark plug clip nor the lead attached to it can get

tangled in the turning propeller or other rotating parts. Check the throttle
linkage, too.

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• Take particular care when carrying the model with the engine running. Hold

the rotating parts well away from you!

• Always keep an adequate supply of fuel in the tank. Never continue to fly

the model until all the fuel is used up.

• Never fly directly over people.

• Never fly directly towards people.

• Make sure to keep a safe distance from residential areas: at least 1.5 km “as

the crow flies”. It is always best to join a club and fly at the approved model
flying site. Always keep well clear of high-tension overhead cables.

• Whenever working on the engine, make sure that you have secure footing,

and always hold the model securely.

• When starting and landing, the take-off and landing strips should be kept

free of unauthorised people and movable obstacles.

• The model aircraft must be kept constantly in sight during the entire flight. It

must always give way to manned aircraft.

• Never operate your aircraft from public roads, squares, squares, school

playgrounds, parks, or sports grounds, et cetera, and ensure that you are
always in full control of the model.

• To ensure that you can stop your engine at any time, the throttle must be

adjusted so that the carburettor barrel closes completely when the throttle
stick and trim are moved to their end points. If this does not work, pinch the
fuel line between your fingers or pull off the connecting tube to the tank.
Never try to stop the engine by grasping the flywheel, propeller, or spinner!

• All model fliers should take care to ensure that the public safety, especially

that of people and property, as well as orderly flying operations, are not
endangered or disturbed.

In legal terms, model aircraft are classed as aircraft and as such are subject to
legal regulations and restrictions that must be observed.

Our brochure “Modellflugrecht, Paragrafen und mehr” (Model Aviation Law,
Legal Requirements and more), Order No. 8034.02 contains a summary of all
these rules, and your local model shop should also have a copy which you can
read. For models with internal combustion engines, it is necessary, for
example, to have the landowner's permission for flights, and insurance is also
mandatory. There are also regulations concerning your radio control system
that must be observed.

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These notes are intended only to make you aware of the many dangers and
hazards that can arise if you work carelessly or irresponsibly. If you take
reasonable care, model flying is a highly creative, instructive, and relaxing
pastime.

Important safety notes

You have acquired a kit that can be assembled into a fully working RC model
when fitted out with suitable accessories. However, GRAUPNER has no control
over whether you observe the instructions for the installation and operation of
the model or the use and maintenance of the associated components. For this
reason GRAUPNER assumes no liability for loss, damage, or costs, which are
incurred due to the incorrect use of our products or due to improper behaviour
on the part of the user, or which are connected with such operation in any way.
Unless otherwise prescribed by binding law, the obligation of GRAUPNER to
pay compensation for any reason whatsoever (including personal injury,
death, damage to buildings, damage due to loss of business or turnover,
interruption of business, or other direct or indirect consequent damage)
stemming from the operation of the model is excluded.
The total liability in all cases and under all circumstances is limited to the
amount of money that you actually paid for this model.

This model is started up and operated at the sole and exclusive risk of the
operator. To avoid injuring people and damaging property, it is essential to be
careful and thoughtful when operating your model.

If necessary, purchase a special RC model liability insurance policy.
These safety notes must be retained and provided to the buyer if sold to
another person.

Guarantee requirements

The guarantee covers the exchange of parts that display demonstrated
manufacturing or material defects during the guarantee period of 24 months from the
date of purchase. Any further claims are excluded. Transport, packaging, freight, and
transportation costs are borne by the purchaser. No liability is assumed for transport
damage. When sending to GRAUPNER or to the service office responsible for the
respective country, a suitable description of the defect must be included along with
the invoice/receipt with purchase date. The guarantee is voided if the failure of the
part or the model is the result of an accident, improper handling, or incorrect use.

GRAUPNER GmbH & Co. KG D-73230 KIRCHHEIM/TECK GERMANY

We reserve the right to introduce modifications. Not liable for printing errors!
01/2012

Made in

Vietnam

21

The following items must be observed:

• Before you fly the model, check that the radio control system is working
reliably, and that all connections are secure.

• The batteries must be charged, and the range of the radio control system must
have been checked. In particular, the transmitter and receiver batteries must
be charged before each take-off.

• Ensure that the channel you intend to use is not already in use. Never fly the
model if you are not certain that your channel is free.

• Observe the instructions and information regarding your radio control system
and accessories.

• Ensure that the servos are not mechanically obstructed in their travel.

• Dry cells and rechargeable batteries must never be short-circuited.

• Remove all batteries before transporting and storing the model.

• Do not subject the model to intense humidity, heat, cold, or to dirt.

• Protect the model and RC equipment against damage or slippage during

transport.

Care and maintenance

• Clean the model carefully after each use. Also remove any dirt from the
propeller. Clean the model and the RC components using suitable cleaning
agents only. Ask your model shop for information.

• If the model is not to be operated for a considerable time, all the moving parts
must be cleaned and re-lubricated.

Tips on building the model

• Before assembling the model, it is essential to read the construction diagram
and the instructions all the way through. When using tools, be aware of the
possible dangers.

• Use only suitable cables that are adequate for the electrical currents that occur
during operation.

• Clean residual grease from all connections that are to be glued. This can, for
example, be done through sanding and using a non-relubricating cleaning
solution. The same goes for the surfaces to be painted, in order to make sure
that the paint sticks. Before gluing parts, always roughen the corresponding
surfaces (especially for GFR fuselages) carefully with fine sandpaper and de­grease them thoroughly, for example with acetone. Otherwise, adequate
adhesion is not assured.