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 1/18 scale Flettner Fl-282 V21 Kolibri scratchbuild model

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Nick_Karatzides
Peind aussi bien avec la main droite ....qu'avec le pied gauche !
Peind aussi bien avec la main droite ....qu'avec le pied gauche !
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MessageSujet: Re: 1/18 scale Flettner Fl-282 V21 Kolibri scratchbuild model   Lun 1 Fév - 4:08

Pre-shading by airbrushing dark coloured lines on model before the basic paint is a method followed by many modelers the last few years. To be honest, I never liked it, never really understood the reason to do something like that and yes, I admit that I never had some decent results whenever I tried it. IMHO adding pre-shading lines before painting is a time wasting & useless procedure with no artistic results on model. After all, what’s the reason to try this, if (one way or another) additional paint layers will be applied on model later, to enlight or darken the basic paint? Anyway, I mostly prefer to:

  • Directly apply the basic paint (without pre-shading and other time wasting nonsense) and later add some colour shades by enlightening or darkening on specific areas or
  • Follow the Francois Verlinden’s old-fashioned way by airbrushing a very dark colour (usually some black & dark brown mixture) all around the model until fully cover it and later gradually light-up the model’s surfaces by repeatedly applying very thin layers of basic paint.


The abovementioned Francois Verlinden’s way possibly practiced by other painters & hobbyists decades before, was first introduced as a painting technique for scale modelling by Francois Verlinden, more than 25 years before. Back in the late 1980ies days, when the internet was not known yet and modeler’s only available reference was the (usually expensive) books from local hobby shop, a Belgian artist named Francois Verlinden managed to create 3D-alike light effects on flat surfaces. He did that by repeatedly airbrushing very thin layers of basic paint on a black (or dark brown) undercoat and then gradually lighten the dark surfaces to replicate the way that sunlight hits on large objects. Since then, some new painting tricks appeared and many modelers improved some older (and forgotten) techniques and re-introduced them as their own “new” inventions. During the last few years, the Francois Verlinden’s old-fashioned way was re-introduced and become popular around the scale modelling community (especially among armour painters), by its new name: “Modulation”! IMHO this modulation fashion looks nice on models but the results are not so “strictly realistic” comparing to the real world objects. As scale modelers, we always have to balance between realism factor and artistic expression. Yes, I admit that modulation effect does not accurately replicate the reality, but it looks so artistically attractive and becomes easily accepted by our visual subconscious.




Process started, by airbrushing an overall undercoat mixture of 80% Life Color LC02 Matt Black and 20% Life Color LC37 Matt Burnt Umber acrylic, to prepare the flat surfaces for the basic paint which about to follow. Asking a blonde to “paint it black” could be confusing for a moment and result some priceless answers.













Dernière édition par Nick_Karatzides le Dim 23 Juil - 19:18, édité 1 fois
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Nick_Karatzides
Peind aussi bien avec la main droite ....qu'avec le pied gauche !
Peind aussi bien avec la main droite ....qu'avec le pied gauche !
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MessageSujet: Re: 1/18 scale Flettner Fl-282 V21 Kolibri scratchbuild model   Lun 1 Fév - 4:09

Having succeeded (in her first airbrushing attempt) to spray black paint onto my clean & tidy hobby bench, I realized that it was time to urgently have a new spray booth for her, considering that my old one broke down after almost 15+ years of use. My initial thought to buy a brand new one, quickly dismissed when I found that the cheapest China-made spraybooth was quite small for my big-sized scale models and the purchase price could start from €100 and rise up to €500 or more. Additionaly, due to limited space on my hobby bench and the fact that I usually build big (close to huge) scale models, the spraybooth should be large enough to fit models inside, portable to keep clear the working bench when not in use and should be easily (and fast too) disassembled and stored under the bench.

Well, as a good friend once said, “everything starts with a wish” and “inspiration can be found everywhere”. I found the following item named “Sortera” which supposed to be a recycling bin with lid or something, at my local IKEA store. Looking exactly like what I’ve been searching for and considering the low €15 price, I bought this 60 litres plastic box (IKEA product code is 702.558.99) and turned it into a paint chamber. Later, I also visited my local Leroy Merlin home depot (located right next to the aforementioned IKEA) store, trying to find the right parts for the project, such as bathroom ventilating fans, outflow plastic tubes and electric wiring. I found two 125 mm diameter bathroom ventilator fans rated at 32 W, 10 dB, 150 m3/h each for only €11 each.

The purchase cost for buying materials to build the DIY spraybooth was:

  • 2 x ventilators rated at 32 W, 10 dB, 150 m3/h each: 2 x €11 = €22,
  • 1 x paint chamber (“Sortera” recycling bin with lid from IKEA): €15,
  • 2 x PVC 125 mm Ø plastic tube 90° fittings & bezel parts: €3,
  • 1 x PVC 125 mm Ø plastic tube 50 cm long: €1,
  • 1 x common kitchen extractor hood filter: €1,
  • 1 x electric wiring 2 m long & switch: €2.


The total ammount with all the hardware was €44 (approx $48).


As soon as returned back home, I spent nearly one hour to assemble parts and make the scratchbuilt spraybooth fully functional. The first ventilator slided through the tubular wall opening (already existed for the previous broken spraybooth outflowing), secured in place and got wired to 220 V with a switch. The exterior wall opening is covered with louvers that automatically close when the ventilator fans are turned off, to prevent ingress of cold air in the room during the winter. Furthermore, when spraybooth is not in use, the inner wall opening is manually sealed with a proper cap.






Later, the second ventilator mounted on a 125 mm wide drilled hole on plastic paint chamber side and connected to 220 V with seperate wire & switch. Between the two in-line-mounted ventilators (one located at the beginning and the other at the end of suction flow), a portable S-shaped 125 mm diameter tubing of total length 75 cm is inserted. At last, a common kitchen extractor hood filter installed, to prevent paint particulates entering into the airflow circuit.







Dernière édition par Nick_Karatzides le Dim 23 Juil - 19:23, édité 1 fois
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Nick_Karatzides
Peind aussi bien avec la main droite ....qu'avec le pied gauche !
Peind aussi bien avec la main droite ....qu'avec le pied gauche !
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MessageSujet: Re: 1/18 scale Flettner Fl-282 V21 Kolibri scratchbuild model   Lun 1 Fév - 4:10

As I later found out when first tested the spraybooth, the ventilators proved more powerful than expected, producing a suction flow of total 300 m3/h, meaning that (if my calculations are correct) the air inside the 60 litres paint chamber is renewed every 0.72 seconds. During the first airbrushing test, I noticed that the spray beam got warped (!!!) close to 90 degrees angle, towards ventilation fan and therefore I placed additional filters to reduce the airflow power.








Long story short? My scratchbuilt spraybooth:


  • Cost me €44 (approx $48) to buy the hardware, plus one hour work to assemble parts & install electric wiring,
  • It has a 60 liters (measures 55x45x39 cm) paint chamber able to accommodate big-sized scale models,
  • It is almost operating silently, not exceeding 20 dB when both ventilator fans are in use,
  • It is fully portable (can be assembled or disassembled in less than 10 seconds) and
  • It sucks air like an inverted hurricane, even when filters are installed!





Having now a new fully functional & custom-made spraybooth, lets return back to to the painting process: All the 60 parts of the model kit, placed onto toothpicks for better handling while airbrushed and sprayed over with an overall mixture of 80% Life Color LC02 Matt Black and 20% Life Color LC37 Matt Burnt Umber acrylic as a primer, to prepare for the later paint layers. The toothpicks pinned onto cork sheet and parts allowed to dry.


Behold the spraybooth filter, after 30 minutes of continuous black paint airbrushing into paint chamber. The use of this simple kitchen extractor hood filter kept the system clean. Double (or even triple) filter layer would be a good idea to reduce the airflow power in order not to warp the airbrush spraying beam (as previously described) and could ensure that components will remain spotless clean for a long time. If there was no filter at all, dirt & paint particulates would easily enter into the airflow circuit and stick onto the ventilator fans and the plastic tube inner walls.



Dernière édition par Nick_Karatzides le Dim 23 Juil - 19:26, édité 2 fois
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Nick_Karatzides
Peind aussi bien avec la main droite ....qu'avec le pied gauche !
Peind aussi bien avec la main droite ....qu'avec le pied gauche !
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MessageSujet: Re: 1/18 scale Flettner Fl-282 V21 Kolibri scratchbuild model   Mar 2 Fév - 3:01

The goal of modulation technique is to artificially enhance the model so the viewer sees more than what is really there. This is nothing new to us; figure modelers and 2D illustrators have been using this idea for years. Verlinden-era dry-brushing and even current post-shading trends dance around this same idea. To break it down even further, the fundamental theory of modulation effect is based upon using a singular light source, and the level to which you take this idea is inherently flexible. One of the beauties of the technique is that you can add a little, or a lot of it to your model.










Modulations effect requires three main levels of color (light, medium and dark) to achieve proper gradations between the values, which are broken into stages as you lighten each progressive step. To do so, lot of airbrushing is required to add some just a little paint layer every time. First, I had to choose a source from which the lighter areas originate. I decide to keep it very simple and intend to have the light coming from the center upper frontal area of the helicopter and will also work well with the downward slope of the top areas. The basic processes and techniques involved are designed to enhance the 3D volumes and details of a model by playing up the balance between dark VS light, shadow VS highlights and so forth. Executing this goal is accomplished primarily with an airbrush by applying gradations of color to give the model more depth. Use of masking paint is essential, in order to focus the airbrush lighter colours spraying onto specific areas only.


Because of the subject itself, the model is predetermined to have a base coat of dark green. Thus the first layer of color I apply is a coat of very thin Life Color UA502 Dark Green acrylic paint layer, very diluted with Life Color’s acrylic thinner in a 30% paint to 70% thinner ratio. The darkest recesses sprayed first, gradually working my way up to the lighter upper surfaces. You can already see the intentional spray pattern developing from the darker lower right to the lighter upper left areas. I will maintain this pattern throughout the entire painting process to preserve continuity with the light source.




The subsequent spraying sessions will continue to utilize very thin Life Color UA502 Dark Green acrylic paint layers as a base to varying degrees because it is the source of the dark green. I will gradually lighten the model with each successive layer as the modulation painting process continues, so the second layer of Life Color UA502 Dark Green acrylic paint as the medium layer of the base coat, is based upon a less diluted 50% paint to 50% thinner ratio. Note that the darker lower areas receive less paint as the shades are carefully blended together, as seen above. Then, I add just a few drops of Life Color UA081 Sand Yellow FS30257 acrylic paint into the mixture to lighten up this stage of paint application, being very careful to always follow the established gradation pattern. The contrast between light and dark is now starting to become more apparent here.


Following same painting procedures, all additional kit parts got some basic Life Color UA502 Dark Green and Life Color UA503 Light Blue acrylic paint and then gradually lighten up or became darker as required. As usual, painted parts placed onto toothpicks for better handling during airbrushing and later pinned onto cork sheet while allowed to dry overnight.



Dernière édition par Nick_Karatzides le Dim 23 Juil - 19:25, édité 1 fois
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draken35
Crée ses propres pieces de photodécoupe en papier maché !
Crée ses propres pieces de photodécoupe en papier maché !
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MessageSujet: Re: 1/18 scale Flettner Fl-282 V21 Kolibri scratchbuild model   Mar 2 Fév - 9:10

Splendid!
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ayrtsen
Premiere tentative de scratch avec des cotons tiges !
Premiere tentative de scratch avec des cotons tiges !
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Kits en cours : Albatros D III , Challenger 2 Désertisé, Go 229,F 16 c,
AT-AT, S5ae Hisso, , AMX 10 RCR et beaucoup trop d'autres


MessageSujet: Re: 1/18 scale Flettner Fl-282 V21 Kolibri scratchbuild model   Mar 2 Fév - 11:21

AU SECOURS j'en peux plus........ briques briques briques
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ottocarius
Colle toutes les pièces... et ses doigts !
Colle toutes les pièces... et ses doigts !
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MessageSujet: Re: 1/18 scale Flettner Fl-282 V21 Kolibri scratchbuild model   Mar 2 Fév - 13:10

Hello!!

YES...YES !!!!!!!!!!FABULOUS................. affraid
Eric

ALLER BOU'JOU
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Nick_Karatzides
Peind aussi bien avec la main droite ....qu'avec le pied gauche !
Peind aussi bien avec la main droite ....qu'avec le pied gauche !
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MessageSujet: Re: 1/18 scale Flettner Fl-282 V21 Kolibri scratchbuild model   Ven 5 Fév - 4:14

CHAPTER V - Fuselage tubular frame painting

Most of the FL-282 related WWII era pictures reveal that the fuselage truss-type welded steel tube frame on the Kriegsmarine’s early helicopters was painted light grey colour, following the general idea of the RLM 63 Light Bluegrey on fuselage fabric cover. On the other hand, the Luftwaffe’s Kolibris seem to had the fuselage steel tube frame painted in some dark colour (RLM 71 Dunkelgrün?) following the doped fabric cover designations. However, it is noticed that few Luftwaffe’s helicopters were appeared once to have the fuselage steel tube frame painted with dark green colour and later with light grey or even having a frame which individual tubes were painted in different colors. This might have happened due the fact that the Kriegsmarine’s helicopters later received by Luftwaffe kept original grey frame colour and just paint the doped fabric cover only or because the damaged helicopters were used as a source of spare parts for the remaining Kolibris.

A fellow scale modeler from UK, sent me a photograph showing the actual Flettner Fl-282 V20 helicopter frame relic as seen at Midland Air Museum on September 25th 1987, before maintenance crew attempts to restore it into normal condition. Although the helicopter’s frame looks in bad condition, it is easy to observe that it was painted with at least three or four different colours. Ofcourse, I cannot be sure if this was the actual appearance of Luftwaffe’s operational helicopters during WWII or if it is a result of poor maintenance, corrosion or even vandalism. Anyway, as long as we accept that the apparently light blue & light grey colours are WWII Luftwafe authentic and not some post-War overpainting job, the picture is a valuable reference source and offers a general view of the paint used on the fuselage & undercarriage frame.


Because of the subject itself, the model is predetermined to have a base coat. Thus the first layer of color I applied was a coat of very thin Life Color UA503 Light Blue acrylic paint layer, very diluted with Life Color’s acrylic thinner in a 30% paint to 70% thinner ratio. The darkest recesses sprayed first, gradually working my way up the frame, keeping to the lighter areas on central parts of each tubular part. Same pattern maintained throughout the entire painting process to preserve continuity with the light source and subsequent spraying sessions continued to utilize very thin Life Color UA503 Light Blue acrylic paint layers as a base to varying degrees because it is the source of the light colour. The tubular frame got gradually lighten with each successive layer as the painting process continued, so the second layer of paint as the medium layer of the base coat, is based upon a less diluted 50% paint to 50% thinner ratio. Note that the darker areas receive less paint as the shades are carefully blended together. Then, I added just a few drops of Life Color LC01 Matt White FS37925 acrylic paint into the mixture to lighten up this stage of paint application, being very careful to always follow the established gradation pattern, untill contrast between light and dark started to become apparent.




Following same painting procedures, each part (except the parts related to the engine and the drive transmitter) of the kit got some basic Life Color UA503 Light Blue acrylic paint and then gradually lighten up or became darker as required. The kit parts that were supposed to be painted in shades of wood, also got some acrylic base paint. As usual, each part placed onto a toothpick for better handling during airbrushing and later pinned onto cork sheet while allowed to dry overnight.



Dernière édition par Nick_Karatzides le Dim 23 Juil - 19:28, édité 1 fois
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Nick_Karatzides
Peind aussi bien avec la main droite ....qu'avec le pied gauche !
Peind aussi bien avec la main droite ....qu'avec le pied gauche !
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MessageSujet: Re: 1/18 scale Flettner Fl-282 V21 Kolibri scratchbuild model   Sam 6 Fév - 2:00

Replicating wood is one of those feared tasks in modeling that many try to avoid at all costs. Having a couple of different methods in mind to simulate wood in scale, but knowing that the following method is much accurate and easier to re-do if something goes wrong, I found good idea to follow some tricks I learned from other builders and changing things that works for me. To simulate the look of rough wood from which was made the helicopter’s tail section frame, I split the areas to be painted in different categories and sprayed four different primary colors on each area. I used the following colors, which seemed to work OK for me. It is important to use an acrylic base colour because it is chemically impervious to the steps that follow.

  • FS31643 available by Life Color as LC21 Matt Flesh Carnicino acrylic paint,
  • FS30400 available by Life Color as UA084 German Desert Yellow acrylic paint,
  • FS30257 available by Life Color as UA081 Sand Yellow RLM79VAR acrylic paint and
  • FS30140 available by Life Color as UA085 US Brown Marrone acrylic paint.



Because the wood composition and quality was not same everywhere, I also use the Life Color's “Weathered Wood” 6-pack set, of 22 ml bottles and repeatedly covered some areas with different shades of very very very diluted (10% paint to 90% thinner ratio) light layers over the previously applied base colours. To do so, I used the following:

  • Life Color UA717 Wood Cold light base acrylic paint,
  • Life Color UA718 Wood Cold light shade acrylic paint,
  • Life Color UA715 Wood Warm light shade acrylic paint,
  • Life Color UA716 Wood Warm light shade 2 acrylic paint,
  • Life Color UA714 Wood Warm light base acrylic paint and
  • Life Color UA713 Wood Warm dark shade acrylic paint.



I'm not really sure if it is actually vissible into following pictures, but repeatedly applied very diluted & light layers, resulted more natural look of wood shades, without even aplly any oil colours yet. The first applied base colours, are visible under the later applied layers of the “Weathered Wood” shades, setting a base for the next process. As soon as paint dried, I repeatedly sprayed a very diluted mixture of thinner, Life Color UA717 Wood Cold light base acrylic and Life Color UA716 Wood Warm light shade 2 acrylic at a ratio of 90% to 5% to 5%, over selected areas such as the leading edges and a few other points, that should look more enlightened.


To apply the wood grain on wide areas covered with plywood, I used wood grain colour from artists oil paints. The higher quality artists grade paints work much better because the pigments are much more finely ground. I believe that “502 Abteilung” by MIG Productions, “Van Gogh” and “Talens” are good brands. The colour of the background coat and the oils may be varied for different kinds of wood. However, be aware that selecting a good colour combination that gives that natural look is tricky. I recommend experimenting on a test piece first before committing yourself to apply the mixture on your latest wondermodel. I arrived at my blend of Burnt Sienna, Yellow Ochre and Raw Umber in a ratio of 25% to 25% to 50% after trying with Raw Sienna (too red), Yellow Ochre (too orange), and one or two mixed combinations.







Dernière édition par Nick_Karatzides le Dim 23 Juil - 19:29, édité 1 fois
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Nick_Karatzides
Peind aussi bien avec la main droite ....qu'avec le pied gauche !
Peind aussi bien avec la main droite ....qu'avec le pied gauche !
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MessageSujet: Re: 1/18 scale Flettner Fl-282 V21 Kolibri scratchbuild model   Sam 6 Fév - 2:00

Once the base coat has cured, I brushed the oils with a broad, soft brush and spread the paint around until the desired colour density is achieved. Because working in oils is a little bit goes a long way, I started by putting just a little bit of paint on the end of the brush. I kept the brush strokes going in one direction and didn’t really worry about leaving brush strokes - I wanted them there for the wood grain. I tried not to spread it on too thick, or it would make the next step more difficult.


At this point the oils would be workable for several hours. With a broad, soft, clean and completely dry paint brush, I draged over the oil paint, leaving wood grain streaks. I jiggled the brush every now and then to give the grain a bit of variation. As the brush picked up the paint, I wiped it off on a clean, lint free cloth and continue process. “Lint free is the key phrase, as any speck of lint would adhere to the oil paint and destroy the finish. The beauty of this technique is that you can clean the oils off and try again if you goof up. Use a clean cloth and paint thinner (mineral spirits or turpenoid - not lacquer thinner) to wipe clean any mistakes and start over again. For the 1/18 scale Kolibri helicopter frame, it took me about two or three tries to get the paint density and colour right, but it really was quite painless.


In some parts of the model which should look more bright, I slightly toned up with "Buff" & "Yellow Ochre" mixtures, or even pure “Basic Flesh Tone" and “Sunny Flesh Tone", while some others had to show darker, using "Brown" or "Raw Umber" color and blend naturally. Meanwhile, I tried same painting procedures on the wooden 3-steps ladder (used by Luftwaffe WWII ground crews and technician personnel for ground vehicle & aircraft maintenance procedures), which also got CAD designed & 3D printed with the helicopter kit parts to be used as a diorama accessory.


As soon as the result was OK for me, I left it alone to dry for few days and then sprayed over selected areas with Tamiya Color X-24 Clear Yellow acrylic, because it also helps bring the grain color out more.







Dernière édition par Nick_Karatzides le Dim 23 Juil - 19:30, édité 1 fois
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draken35
Crée ses propres pieces de photodécoupe en papier maché !
Crée ses propres pieces de photodécoupe en papier maché !
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MessageSujet: Re: 1/18 scale Flettner Fl-282 V21 Kolibri scratchbuild model   Sam 6 Fév - 4:57

Shocked Shocked Shocked Shocked Shocked

Wonderful and instructive!
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Peind aussi bien avec la main droite ....qu'avec le pied gauche !
Peind aussi bien avec la main droite ....qu'avec le pied gauche !
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MessageSujet: Re: 1/18 scale Flettner Fl-282 V21 Kolibri scratchbuild model   Mar 9 Fév - 11:10

CHAPTER VI - Balkenkreuz & swastikas water slide decals

In recent years, most scale model companies avoid (for political correctness reasons) to depict the swastika symbol on kit box and the water slide decal film. In addition, some scale modelers fear of some mighty Holly Inquisitorial Court and remove or misquote the swastika symbol from their plastic aircraft models when present them on exhibitions, contests, magazine articles and hobby related forums around the internet. Since I strongly believe that scale modeling is not a political statement, but rather a source of Historical information, I do not intend to follow the hiding-the-truth hypocritical behaviour that starts to occur around the scale modeling community nowadays. Scale modeling is used for purposes of civic education, protection against anti-constitutional activities, scientific and military History research and reference for aviation enthusiasts. The swastika symbol stigmatized as being associated with German Nationalist Aryans sick wishes to conquer the World & dominate the Universe but it should never be forgotten, misquoted or deleted - it is a symbol marked a dark era of human History. Nowadays, the swastika has been outlawed in Germany, proof that the Germans ashamed (once again) of their ancestors History. In short, building WWII Luftwaffe plastic aircraft scale models with the swastika symbol on tail or wings should not be misunderstood as expression of sympathy for any neo-Nazi or extreme right-wing groups. For all the abovementioned reasons, the swastika symbol will be clearly visible on my Fl-282 V21 scale model tail fin as once appeared on actual helicopter during the WWII.


While surfing the net, I discovered someone who had an auction item, actually a WWII German aircraft relic, that is supposed to be part of Flettner 282 helicopter. He claimed that part (with balkenkreuz insignia on) was cut out by WWII veteran US Army PFC Donald R. Nankervis who sent it to his home back in States as a War trophy. According to the instructions written on the back of the canvas, the item was a part was “taken from a German airplane stationed at Hittler’s private airport at Ainring village between Teisendorf and Salzburg, Austria”. Nowdays Ainring airport museum officials, confirm that the Flettner 282 helicopters were actually stationed there at that particular time period (7th May 1945) and used by the 3rd Reich authorities to serve Berchtesgaden & Berghof residence - this makes the story plausible enough and quite convincing, as far as the Historical data and dates. On the other hand, I have some doubts because at that time, all Kolibri helicopters were supposed to be painted with the Luftwaffe's RLM Green / Light Blue colours and not the Kriegsmarine's Grey. I’m also puzzled as to why the US serviceman didn’t cut out the entire stammkennzeichen marking, but I think that US soldiers were more interested for balkenkreuz & swastikas insignia trophies at this moment, because they symbolic represented the victory on the 3rd Reich. Possibly, the US troops didn’t have in their mind that these items will become very valuable for collectors & scale modelers 70+ years later. Additionally, if the above mentioned seller’s story is true, it turns out that the British troops were not the only ones who vandalized some one-of-a-kind (at that time) aircrafts, just to show to their friends & family back home that they fought Germans. Anyway, if the auction item is actually a genuine part of a Kolibri helicopter, the following pics are certainly valuable info, considering the rarity of helicopter’s color photographs.








The first couple of 3D printed 1/18 scale Fl-282 helicopter models built by me as commision work on behalf of collectors, had the Kriegsmarine’s stammkennzeichen (four-letter factory radio code on the fuselage sides and repeated on the both elevator wings undersides), the balkenkreuz & swastikas insignia airbrushed on fuselage - a process that requires precision and careful masking.


The airbrushed insignia might look nice on big scales when all the repeated masking & airbrushing layers are perfectly executed, but I am a lazy guy and I follow that “the easier, the better” motto. To do so, I designed the images on Corel, rescaled them on right dimensions and asked Mr. Triantafyllos Metsovitis, owner of LM Decals to print some right-in-scale Luftwaffe water slide decals for me. Yes, simplicity makes things flow without effort.

Luftwaffe insignia print under exact dimensions for a 1/18 scale build, is included into the 102-page ultra-detailed “1/18 Fl-282 V21 kit building instructions” manual which can be found HERE as a PDF format downloadable file.




I used a soft brush to apply a light coat of Microscale MicroSol to soften the water slide decal and allow it to become part of the surface. As soon as the water slide decals were dry, an acrylic gloss coat applied to seal the result so far. Once the acrylic gloss coat has cured, I tried to wash the paint by brushing “Winter Streaking Grime” available by AK Interactive as AK014 filter, until the desired colour density is achieved. The outcome had tonality differences and looked like been highlighted by the sun while shades softly blend each other. Some of the wash mixture is re-applied and the wash being wiped completely out of the narrow points.



Dernière édition par Nick_Karatzides le Dim 23 Juil - 19:33, édité 2 fois
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MessageSujet: Re: 1/18 scale Flettner Fl-282 V21 Kolibri scratchbuild model   Mar 9 Fév - 11:13

jump applaudit applaudit applaudit applaudit applaudit applaudit applaudit thumright thumright thumleft thumleft
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MessageSujet: Re: 1/18 scale Flettner Fl-282 V21 Kolibri scratchbuild model   Mer 10 Fév - 8:59

Splendid!

And I fully agree with you, for what concerns the Swastika...
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MessageSujet: Re: 1/18 scale Flettner Fl-282 V21 Kolibri scratchbuild model   Jeu 11 Fév - 0:51

Hello !...... cool

AIE..AIE..AIE..AIE !!!!!!........ Shocked Shocked Shocked jump jump jump jump WONDERFUL !!!!!...... BEAUTEFUL !!!!!..........Pfffou...... thumleft merci for the wonderful work !!!!
Amicalement Eric
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MessageSujet: Re: 1/18 scale Flettner Fl-282 V21 Kolibri scratchbuild model   Mar 16 Fév - 18:27

CHAPTER VII - Radial engine(s) painting, weathering & mounting

Setting as a task to build the model in such a way that all the maintenance hatches, removable doors, hoods & sliding panels would remain opened to make helicopter’s internal structure visible, building and later painting & weathering as required a 7-cylinder radial engine is something I should also take care of. Actually, the model’s observer can easily have a closer look inside the helicopter’s belly and also check detail on the - visible by any angle - engine details same time. Since the engine would be installed inside the helicopter's belly in the fuselage center-section, a second engine also 3D printed to be placed onto a wheeled stand and present it nearby helicopter, as it would be there for maintenance purposes - just a diorama scene idea. These two engines are almost identical with only difference that the first one is designed to fit into the helicopter’s transmission unit, while the second is equiped with a bezzel to fit a propeller and is designed to be displayed on the wheeled stand. For those who might be interested, both 7-cylinder radial engines are available HERE as 3D printed models under 1/16 and 1/18 scale, with or without the wheeled stand.






As soon as both engine miniatures unpacked from plastic bags shipped from Shapeways and carefully examined, they were dipped into White Spirit for a couple of minutes to clean the oil & wax traces left from MJM process while 3D printing. Shortly after parts were washed and allowed to dry, a layer of Ammo Mig Jimenez AMIG2004 “White waterborne polymer primer” airbrushed over to spot cracks & imperfections and prepare for paintjob. Since I do not consider myself a highclass modeller and I had no experience to paint realistic way radial engines, I thought as a good idea to follow proven techniques described by Mr. Javier López de Anca García into the “Airplanes in scale - The greatest guide” book, hoping that I could achieve some decent results.


Both engines received an overall base coat of Alclad II metal laquers. When metal paint completely dried, a dark oil paint wash followed using the “502 Abteilung” Black by MIG Productions. Later, the aluminum paint got some slightly different “burnt” tone, by airbrushing thinned MIG-098 Light Blue acrylic crystal around the base of each cylinder and some MIG-093 Red acrylic crystal around the head of each cylinder. The engine’s crown got some Life Color UA504 RLM 02 Grau acrylic paint and rivets shadowed with Dark Grey oil paint. As for the collector exhaust ring & pipes, they initially were painted with FS3004 Matt Burnt Umber available by Life Color as LC37 acrylic and later repeatedly washed with dense oil paint mixture of “Vandyke Brown” available by Winsor & Newton, thinned with White Spirit to a consistency between a filter and a wash. Some Light Rust available by AK Interactive as AK046 filter also randomly brushed on exhaust pipes.



Dernière édition par Nick_Karatzides le Dim 23 Juil - 19:34, édité 1 fois
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MessageSujet: Re: 1/18 scale Flettner Fl-282 V21 Kolibri scratchbuild model   Mer 17 Fév - 1:21

Waouw! Awesome building and painting job. thumleft applaudit applaudit
Congratulations !

Fred
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MessageSujet: Re: 1/18 scale Flettner Fl-282 V21 Kolibri scratchbuild model   Mer 17 Fév - 9:16

thumleft thumleft thumleft
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MessageSujet: Re: 1/18 scale Flettner Fl-282 V21 Kolibri scratchbuild model   Mer 17 Fév - 11:02

marvellous ! thumright
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MessageSujet: Re: 1/18 scale Flettner Fl-282 V21 Kolibri scratchbuild model   Dim 21 Fév - 6:30

When powerplant paintjob looked OK to me, it was about time to attempt mounting both 7-cylinder radial engines as required - the first one onto helicopter’s tubular frame and the second one placed on the wheeled stand. As described into through pages #8 to #14 of the ultra-detailed “1/18 Fl-282 V21 kit building instructions” manual (which can be found HERE as a downloadable PDF format file), the radial engine carefully inserted underneath the main tubular frame and placed in such way to align the engine’s four slots right onto the frame’s support beams. Since the nearby battery brackets were too fragile (only 0.4 mm thick), I had to avoid violent moves while installing engine to prevent plastic fracture. As soon as the four slots were simultaneously aligned onto the support beam heads, the engine slided backwards and secured in place by adding a drop of cyanoacrylate super glue.




The drive shaft inserted into the transmission unit’s upper opening as shown on the following pictures. The drive shaft designed as a mirrored part and therefore it can be installed either on one side or the other - no matter which side is the top and which is bottom. The transmission unit should be placed on the front of the engine block from which the drive shaft ran to upper gearbox. To do so, the block carefully inserted underneath the main tubular frame, placed in such way to align transmission’s rear opening against the 7-cylinder radial engine’s front end and secured in place by adding a drop of cyanoacrylate superglue.







Dernière édition par Nick_Karatzides le Dim 23 Juil - 19:35, édité 1 fois
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MessageSujet: Re: 1/18 scale Flettner Fl-282 V21 Kolibri scratchbuild model   Dim 21 Fév - 6:34

Well, it took approx 230 pictures and several thousand text words so far, to present the first actual plastic-to-plastic CA gluing. As previously mentioned into “CHAPTER III”, I prefer to follow the “paint individual parts first and assemble model later” rule, since I find it more appropriate and surely make my life easier. Seems like the WIP turns from CAD to traditional modeling now, isn’t it?






The wheeled stand for 2nd engine, also got painted with some random yellow acrylic paint and later weathered to look paint scraped, with faint areas of rust and a lot of dirt & oil stains.





Dernière édition par Nick_Karatzides le Dim 23 Juil - 19:36, édité 1 fois
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MessageSujet: Re: 1/18 scale Flettner Fl-282 V21 Kolibri scratchbuild model   Dim 21 Fév - 7:17

Shocked Shocked Shocked Shocked Shocked

Splendid work!
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MessageSujet: Re: 1/18 scale Flettner Fl-282 V21 Kolibri scratchbuild model   Dim 21 Fév - 10:47

Hello

beautiful !!!!!! it's wonderful........ applaudit applaudit thumleft thumleft thumleft thumleft thumleft
Amicalement Eric

ALLER BOU'JOU
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MessageSujet: Re: 1/18 scale Flettner Fl-282 V21 Kolibri scratchbuild model   Dim 21 Fév - 12:34

woaow ! this guy is crazy thumleft thumleft thumleft thumleft
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MessageSujet: Re: 1/18 scale Flettner Fl-282 V21 Kolibri scratchbuild model   Jeu 3 Mar - 20:35

The engine’s cooling fan, proved to be the most controversial part of the kit. What really happened? Well, first things first: The Kolibri helicopter was equipped with an air-cooled 7-cylinders radial engine located inside the fuselage center-section and enclosed by outer skin. The powerplant should be efficiently cooled somehow to ensure proper & continuous operation. To do so, air was drawn in through openings beneath the fuselage by a wooden cooling fan with direct drive from powerplant provided strong air flow towards engine’s cylinders.


Despite the fact that “Luftwaffe Profile Series #6 Flettner Fl 282” ISBN 0-88740-921-0 book (released on 1996 by Schiffer Publishing, written by Theodor Muhr and originally publilshed on 1991 by Flugzeug Publikations GmbH under the title “Flugzeug Profile Flettner Fl 282 Kolibri Varianten”) says that “…continuous cooling provided by an eight-blade wooden cooling fan with direct drive from the engine…” (page #8), I could not find any front head view photograph of the so-called 8-bladed cooling fan.




On the other hand, Ryszard Witkowski author of the “Rotorcraft of 3rd Reich #5109” ISBN 978-83-89450-43-2 book (released on 2006 by MMP - Mushroom Model Publications), says that “…the engine was cooled by a wooden twelve-blade fan…” (page #24), which further complicates the question on the cooling fan issue. So, what type of cooling fan was actually fitted in front of the air-cooled 7-cylinders radial engine? Was it a 8-bladed wooden propeller or a 12-bladed? Or maybe none of the above?




To make things worst, the available diagrams are side-viewed and it’s not easy to say if the cooling fan is 2-bladed, 10-bladed or 50-bladed. IMHO, when it comes to “cooling” issue, I think that a multi-bladed fan would be more appropriate. Although a 6-bladed cooling fan had already been used on Flettner Fl-265 helicopter, the Deutsches Museum officials deny the 8-bladed or 12-bladed fan claim and they strongly support the 2-bladed propeller 90 cm Ø version - after all, they supposed to know better about Flettner 282, don’t they?


Furthermore, I spotted more errors and incorrect assumptions into the pages of the aforementioned books, which further strengthens my doubts about the accuracy of the given information. For example, it is written that Flettner 282 had not functional elevators and they were just “dummy” horizontal stabilizers bolted to fuselage frame, which is a huge mistake because blueprints, actual pictures & videos show the exact opposite. Also, it is written that all Kolibris from V20 to V24 versions were completed as two-seaters, which is also a false claim, according to Luftwaffe’s WWII and Anton Flettner Flugzeugbau GmbH files. Anyway, since I had not a clear evidence of an 8-bladed or a 12-bladed wooden propeller use on Kolibri helicopter and having in mind that both above mentioned books had already few mistakes written into pages, the multi-bladed wooden propeller story seems a little “questionable” and the 2-bladed cooling fan version is considered as the most “plausible”, just like appeared on the Focke Wulf FW-61 helicopter which already had a single 2-bladed propeller for engine air cooling. I hope my estimations / guesswork are correct and I will not have to publicly perform seppuku because of shame.





Dernière édition par Nick_Karatzides le Dim 23 Juil - 19:37, édité 1 fois
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