Motteling problems...

Anonymous

Member since
November 2005

Motteling problems...

Posted by Anonymous on Monday, February 28, 2005 12:18 PM

Hey guy's! Cool [8D]

In the past year or so, I have accostumed myself to my new Iwata Eclipse 4500.

I have built several models that dont require german aircraft camouflage (ie motteling), but rather single or several coloured vheichles, that can be masked, so no painting problems are suppose to happen.

Finally I diged out an old 1970's Hasegawa Fw190. Now I have all the main coloures lying beautiflly on the model, with nice preshading job underneath.
In order to save this paint job, I layed a nice lair of airbrushed future, protecting it.

Now it's time to mottel...

I have tried today and all I got is splatters and spiders. Obviusly (or is it??)something is wrong with my paint/thinner/air pressure ratio.

I tried to "play" with it, reducing the air pressure as well, and all I have is a mess... Disapprove [V]

Fortunatly I have tried this in a small area on the tail, where I can hide it with a new lair of RLM 76 (mottels will be RLM 74,75).

What am I doing wrong?
How do you mottle your 190's and 109's so beautifully?
Do you have an "exact formua"?

THANX!!! Smile [:)]

P.S.

I have cleaned my airbrush thoroughly prior to motteling.

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ABARNE

Member since
February 2003
From: Southern California, USA

Posted by ABARNE on Monday, February 28, 2005 1:56 PM

Sounds like maybe too much thinner and/or holding the AB in one spot too long.

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Anonymous

Member since
November 2005

Posted by Anonymous on Monday, February 28, 2005 2:51 PM

Your pressure is too low and youre moving to slow. Up your pressure a tiny bit ata time and move around a bit more, youll find your grove.

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Anonymous

Member since
November 2005

Posted by Anonymous on Monday, February 28, 2005 2:51 PM

Well, what I do is,
Thin the paint the same, about 50/50
Then take a piece of cardboard, punch a couple of holes in it, different shapes and sizes. I have several 4-5" long 2-4" wide wide strips of cardboard with 1 hole at the end.
I then hold it about 1/8-1/4 of an inch off the surface and spray thru the holes from about 1-2" away depending on how fast and thick I want to lay the paint.

I have a block of styrofoam, I set the kit in position on top of the block and thumb tack the cardboard mask to the side of the block.
I then can move the model and mask around as needed.

I keep a spray bottle with some alcohol in it. When I have everything positioned I spray a shot of alcohol thru the hole to check placement.
If it meets my satisfaction, I spray paint after the alcohol evaporates.

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Tankmaster7

Member since
August 2004
From: Nowhere. (Long Island)

Posted by Tankmaster7 on Monday, February 28, 2005 3:25 PM

I practiced mottleing on a piece of paper and it worked great. This is what I did: AB at 11 or 12 psi. Thin paint as I normally would, and then add a couple of drops of extra thinner. Press down trigger, then pull back and QUICKLY move the AB along the small area I want mottled. Do this until you get the desired heaviness and you've got yourself a mottle!

-Tanky

Welcome to the United States of America, a subsidiary of Exxon Mobil Corporation, in partnership with Halliburton. Security for your constitutional rights provided by Blackwater International.

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saltydog

Member since
July 2003
From: Lower Alabama

Posted by saltydog on Monday, February 28, 2005 10:31 PM

mottling is very delicate work Shahar, and very detailed. in order to have the ultimate control of your paint placement, you need extremely thin paint, very low air pressure, and get in real close to the surface. i'd try a 70% thinner to 30% strained paint, 10 psi, and get in to about 1/4 to half an inch from the surface. this takes much patience and practice, so you may want to practice on something else first.
thinner can also have that effect you're talkin' about too. what type of paint and thinner are you using?

Chris

The Origins of Murphy's Law: "In the begginning there was nothing, and it exploded."!!! _________ chris

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Anonymous

Member since
November 2005

Posted by Anonymous on Tuesday, March 1, 2005 12:44 PM

Thank's guys!

The reason I bought the Eclipse, is so I can work slowley and within close range to the surface.
I dont think I should move quickly in erattic motions and find the "right groove", cause I'd like to portray the correct manner of the motteling. I am building Josef "pips" priller aircraft (had thoughts about nowotny, but I wanted the big 13 on the fuselage sides) and since it's its a praticular aircraft I'll need to work slowly while "building" the correct mottles, according to the photo I have.

Chris, I use Model master enmales, and use (unfortunatly) a commercial thinner that can be found in home improvement stores. The thinner is called simply "thinner 20". I had "Thinner 21" before but it was very strong. Those are mainly for house paints.

I cant use acryllics since I live in a very dry place, and acrylics just clogs my AB.
I dont have MM thinner or another modelling brand related thinner.
Any other thoughts please?
Thanks!! Cool [8D]

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