Problems with Tamiya primer and color.

[Zoom]

Hello from Sweden.

I´m building a Pocher Mercedes K82, but I have some problem with the Tamiya products.
I have spraied the firewall with TAMIYA surface primer  (gray) and let it dry for a day.
Then the second coat is TAMIYA  TS-26 (pure white).
Why is not the white "spread" evenly??
/Bo

[cobraman]

I have had problems with white in the past. Was your coat of white a very light or mist coat ?

[Zoom]

I will call it light.I have had no problems with oter Tamiya colors??

[Cato]

Bo,

Not sure why you are shooting white on the firewall unless it's a base for an aluminum finish. You may simply have not applied enough paint to even off the finish. It looks rather well as it is because it adds depth and three dimensionality to the raised parts. I would not be too concerned as when in place with parts on it and the engine in front of it, very little will be noticed.

I invite you to post a work-in-progress of your build in the Big Boyz section. We have three Pochers in the works there with several others to come on board soon. Pochers are always welcomed here.

[High octane]

I would've used WHITE primer under the white color coat, and not grey. I only use grey primer if I'm spraying silvers or black color coats, and white primer under ALL other colors.

[b-body fan]

Many white paints have very heavy pigments. Try warming it up if it's a rattle can. If airbrushing maybe thin it a tad more and use light coats until you get the desired coverage. Just a suggestion. Hope it helps, Mike.

[Harry Joy]

b-body posted exactly what I was thinking. Warm the can, and do light misting coats. The paint has pooled from too much at once. And some Tamiya rattle-can colors spray vastly better when warm. Either keep the can on a window sill in the sun for a while before using, or heat a pan of water, remove the pan from the heat, and put the can in the pan for a few minutes.

Tamiya spray white is in my opinion the best pure white out there, especially since Floquil's Reefer White is dead and gone. But it does not have the same spraying properties as the Tamiya primer. Tamiya Silver Leaf also likes being warmed, among other colors.

[Dave Van]

Ditto on white primer....Tamiya or Dupli-color.

Never have good luck with white or yellow over gray.

 

[aurfalien]

Well, from all I've read, colors like yellow and white are very tough when done over a darker color.  I've done grey primer to help show defects and then once fixed, shoot white primer over and then my final color.  or keep it grey if shooting various silvers etc...

My LHS will shoot silver as a base or primer based on final coat color.  The guy is a wizard and I think he shot yellow over a silver base coat and it was amazing!

[Helper Monkey]

Looks to me that you need to a bunch of light coats. I have learned and I am sure it is the same for everyone else one here that you can not expect to do light colors in one coat only,  especially over a darker color. When you try to do too much at once you get pooling and uneven paint. 

Of course there is always the issue of which pigment is being used in the paint. Sadly most model paints never tell you the pigment they use.  PW6 is the pigment code for Titanium white. The most opaque white on the market that is not PW1 which is lead / flake / cremitz white. There are very few reputable companies that use lead white as it is considered poisonous. I tend to  see it used in artist brand oil paints as lead speeds up drying time. However if they are using PW4 which is Zinc/Chinese white. Zinc white is known to be transparent, so it will take a lot of coats.

Edited September 14, 2015 by Helper Monkey

[Dave Van]

  On 9/14/2015 at 1:27 AM, aurfalien said:

Well, from all I've read, colors like yellow and white are very tough when done over a darker color.  I've done grey primer to help show defects and then once fixed, shoot white primer over and then my final color.  or keep it grey if shooting various silvers etc...

My LHS will shoot silver as a base or primer based on final coat color.  The guy is a wizard and I think he shot yellow over a silver base coat and it was amazing!

Agreed.....and silver is a good color blocker for colored plastics.....

[Zoom]

 

Thank you all for the responses!

I don´t think about the color of the primer, I just take one from the shelf in the store.
Now when you told me, you are absolute right. No good idea to put white over gray 

I have to buy a white primer for the coming painting of the main body.

Cato: Yes I can start a build thread in Big Boyz, I have one going in another forum but I can make a summary and keep it going here.

/Bo

[Cato]

  On 9/14/2015 at 8:24 AM, Zoom said:

Cato: Yes I can start a build thread in Big Boyz, I have one going in another forum but I can make a summary and keep it going here.

Excellent Bo. Look forward to more Pocher builders here!