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Old 07-10-2019, 05:03 PM
deltapike deltapike is offline
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Corrugated surfaces

Has anyone successfully replicated the corrugated metal surfaces of certain aircraft as found on the Ford Trimotor, Douglas TBD Devastator, Junkers Ju-52, etc...?
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Old 07-10-2019, 07:18 PM
cfuruti cfuruti is offline
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Does bonding aluminum foil count? See a sample here: http://www.papermodelers.com/forum/373426-post325.html
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Old 07-10-2019, 07:39 PM
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"Corrugated" will be your search word - have fun...,

This picture is worth more than words - the "Tin Donkey" tail is exemplary of corrugation experiments though at this point it still remains unexplained. Reason? It belongs in the "magic" category of modeling that is beyond what most modelers can achieve and therefore can't be stolen over the internet - or something that has high affinity to that nature...,



Some vague and ambiguous regards,
-Gil
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Old 07-11-2019, 05:52 AM
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https://youtu.be/M4EOT1XXc_Y?t=229

I believe you are looking for something like this. I do believe as part of scale modelling, we should be much more proactive in learning from other mediums than the community currently is doing right now.
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Old 07-11-2019, 06:47 AM
tigertony100 tigertony100 is offline
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Hello deltapike, look what forum member Bob Penikas did to the Antonov An-2 Colt that Bruno Vanhecke gave us for free. And this was done on paper not in aluminum foil. I´ve seen this technic used by others modellers like Gomidefilho, and in spanish forums as well. The key is that rounded tool which I think came in various sizes. Regards,Tony
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Corrugated surfaces-burnishing-copy.jpg   Corrugated surfaces-517.jpg  
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Old 07-11-2019, 08:33 AM
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Rubenandres77 Rubenandres77 is offline
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Quote:
Originally Posted by deltapike View Post
Has anyone successfully replicated the corrugated metal surfaces of certain aircraft as found on the Ford Trimotor, Douglas TBD Devastator, Junkers Ju-52, etc...?
There are some problems in trying to achieve a realistic and scale representation of the original subject.


However, you can try several approaches.

If you're not satisfied with the printed textures, then embossing the paper is an option.
Tigertony already linked above an example.



Another option is to try real metal.

Consider what metal embossing crafters do, and the tools they use:





(source of image: MercArt: The Metal Embosser )


You will need to learn how to work metal (/pewter, aluminum, etc), and the proper tools to do it.
Needless to say, you'll need some time to learn the technique.

To achieve something similar to what Gil showed in the photo he posted,
you will need to tray some sort of grooved surface to use as die
and press the metal against it.

With current CNC technology you may be able to order dies
engraved with grooves at the proper scale to achieve the desired effect.

However, that would increase the budget by several orders of magnitude,
as you will probably need more than just one die for the different parts of the aircraft you wish to build.



I can think of even yet another option, much cheaper and faster:

Layering the corrugation just by using strips of the same paper.

As in the following photo:

Corrugated surfaces-grooves.jpg

This is part of a personal project I'm developing (not a scale airplane).
But I came across the same problem: replicating a corrugated surface.

To speed up the process I found layering long strips works rather nicely.

Is not an exact realistic scale duplicate of the original subject.
But I never intended it to be: I just wanted to make a visually similar object
that the people can recognize as being close to the original subject when they see it.

The big plus of this technique is that it is faster and cheaper.
And also, the paper suffers less distortion and keeps its strength.

In the case of airplane skins like the ones you mentioned,
you may try this "layered strips" approach, using grey-colored cardsctock,
or spraying metallic paint over the white paper.

But I imagine it will need lots of time and patience to make it right.


Regards,
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Corrugated surfaces-grooves.jpg  
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Old 07-11-2019, 08:39 AM
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The tools are not expensive (If you can wait 3-4 weeks for delivery from the Far East.)




These are both clipped from Wish.com There is £4 p&p added to these prices for UK. The bigger tools are excellent for forming curved surfaces in animals and figurines. My best tip for softening the card for burnishing is ... Don't dampen the card ... just lick the tool as needed.
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Old 07-11-2019, 09:18 PM
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airdave airdave is offline
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why not just use a paper crimper?
works with paper, foil, card, whatever.

https://www4.bing.com/images/search?...02&FORM=IQFRBA

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Old 07-11-2019, 10:25 PM
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scissorsandplanes scissorsandplanes is online now
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That's what I needed for my Saturn V rocket.
thanks for the info.
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Old 07-12-2019, 09:24 AM
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Papa Mashy Papa Mashy is offline
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This is an interesting thread.


I like the crimper, but wouldn't it shorten the piece if you were using a pre-cut section?
Perhaps this is only for scratch building?
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