_GOTOBOTTOM
AFV Painting & Weathering
Answers to questions about the right paint scheme or tips for the right effect.
Do you need to prime plastics?
bytepilot
Visit this Community
Karnataka, India / भारत
Joined: June 01, 2002
KitMaker: 381 posts
Armorama: 0 posts
Posted: Thursday, August 01, 2002 - 05:51 PM UTC
Hi all,

Just a niggling question. I'm planning to paint stuff using acrylics, and I'll be thinning them with distilled water.

I'd like to know if I have to spray a coat of primer on my aircraft before I use the acrylics(like automotive grey primer or something) on the plane. Or will the paint stick if I just airbrush it directly?

Also, can I use a coat of matt white or grey enamel paint as a primer for my acrylics? BTW, I'm talking about normal enamel paints here, which you use for normal everyday household painting(not modelling enamel paints. I can't get them here in India ). The matt paint does not have an oily surface like glossy enamel paint, so I guess i can spray acrylics and it should hold.

Opinions welcome...

Rgds,
BP.
CaptainJack
Visit this Community
Luxembourg, Belgium
Joined: March 17, 2002
KitMaker: 793 posts
Armorama: 0 posts
Posted: Thursday, August 01, 2002 - 07:49 PM UTC
I would suggest ALWAYS, using a primer. Automotive/antirust types are the best. This creates a nice even surface taxture for later paint applications.

Welcome aboard.

Captain Jack's Namastee Nirvanah club
sgtreef
Visit this Community
Oklahoma, United States
Joined: March 01, 2002
KitMaker: 6,043 posts
Armorama: 4,347 posts
Posted: Thursday, August 01, 2002 - 07:56 PM UTC
Jack said it and yes Welcome to Armorama wonder if I spelled that right with nine examples around
as you can see we are a fun loving bunch.
bytepilot
Visit this Community
Karnataka, India / भारत
Joined: June 01, 2002
KitMaker: 381 posts
Armorama: 0 posts
Posted: Friday, August 02, 2002 - 12:53 AM UTC
LOL SgtReef, that's a great signature pic you have there !!

Can't blame you, the bastard's equally wanted here.....hehe..

Thx for the adv.. I'll see where I can hunt up a spray can of auto primer... However, am worried that it could eat into my plastic kit. Have to check out the contents b4 I spray it on my kits...

Rgds, BP.
m1garand
Visit this Community
Washington, United States
Joined: February 08, 2002
KitMaker: 1,248 posts
Armorama: 0 posts
Posted: Friday, August 02, 2002 - 01:03 AM UTC
I use a primer by Tamiya. Comes in a large spray can in 3 colors. Works very good for me and does not attack the plastic. I use it on resin as well.



HTH
2-2dragoon
Visit this Community
Washington, United States
Joined: March 08, 2002
KitMaker: 608 posts
Armorama: 268 posts
Posted: Friday, August 02, 2002 - 01:31 AM UTC
I usually prime any plastic I plan to paint with acrylic with an enamel primer, whether gray or whatever. Sometimes I will paint it white or off-white, depending on the darkness of the colors I want to paint. Yes, PRIME!
sniper
Visit this Community
New York, United States
Joined: May 07, 2002
KitMaker: 1,065 posts
Armorama: 508 posts
Posted: Friday, August 02, 2002 - 02:32 AM UTC
If you are using any PE parts it's especially important to use a primer. You really need something that sticks to that metal.

I have been using the Tamiya primer because I can't find the acrylic automotive primers only the enamel.

When I do find those, I will give them a try as the Tamiya is about 2x or 3x the cost.

Steve
Abrams101
Visit this Community
United States
Joined: July 18, 2002
KitMaker: 146 posts
Armorama: 0 posts
Posted: Friday, August 02, 2002 - 05:53 AM UTC
ALWAYS WASH AND ALWAYS PRIME 2 most important steps.
I use black primer so that I already have my shadows and stuff like that and also I'm not verry good at washes. So the black in the cxreases and around details helps
Sometimes I'll use a burnt umber or siana for the same reason,.
And yes welcome to Armorama, Youve just made a very big step in modelbuilding, just by coming here. Godspeed
bytepilot
Visit this Community
Karnataka, India / भारत
Joined: June 01, 2002
KitMaker: 381 posts
Armorama: 0 posts
Posted: Monday, August 05, 2002 - 01:31 PM UTC
Hi all,

Thanks for the inputs. OK, after going thru all your posts, here is what I'm gonna do: I'm gonna thin a household white matt paint(Sorry, but we don't get sprayable primers here in cans !) and spray it on my a/c after washing it using soap water. Hopefully, this should act as a primer coat for my acrylics...

Rgds,
BP.
SS-74
Visit this Community
Vatican City
Joined: May 13, 2002
KitMaker: 3,271 posts
Armorama: 2,388 posts
Posted: Tuesday, August 06, 2002 - 10:58 AM UTC

Quoted Text

I use a primer by Tamiya. Comes in a large spray can in 3 colors. Works very good for me and does not attack the plastic. I use it on resin as well.



HTH



I am currently using this as well, the advantage of this is it sticks to metal/plastic/resin equally. The down side is I find it to be too thick, and the smell is WOW! (This stuff can give you some rush and High without taking any drugs) #:-) #:-)

I personally would vote for Gunze Sanyo Mr. Surface 500 or 1000 for priming.

otto
Visit this Community
Baden-Württemberg, Germany
Joined: June 30, 2002
KitMaker: 72 posts
Armorama: 50 posts
Posted: Tuesday, August 06, 2002 - 12:22 PM UTC
I prime all my kits before I paint them with Gunze Sangyo Mr. Surfacer 1000 (the one in the spray can) It works EXCELLENT and it can also hide any small imperfections you may have. .......Otto
Posted: Wednesday, August 07, 2002 - 03:16 AM UTC
for some reason, i find it better not to use primer when i do figures. less mess and i don't lose any detail. i have never had any peeling or cracking, or any problems not priming my figures. i don't use oils, just enamels and acrylics.

Chris Pig no.1
bytepilot
Visit this Community
Karnataka, India / भारत
Joined: June 01, 2002
KitMaker: 381 posts
Armorama: 0 posts
Posted: Tuesday, August 27, 2002 - 08:29 PM UTC
OK, one last question before I let this thread get over...

Do you recommend using an airbrush to spray the primer? I tried this yesterday on my Hellcat, and for 60% of the time I didn't have any problems. The remaining 40%, the AB just seemed to clog up and not send out any paint at all, even at 40 PSIs.

I then had to tip off the remaining paint, clean the AB and start again. I had to do this 2-3 times before I got a grey coat all over my A/C. Now, the problem is that since I am using a mix of 50-50 thinner/primer, I had to clean so much, and it became a real pain after the second try.

But looks like I'm doomed to do this b'cos I don't get spray primers here.. DAMN, DAMN, DAMN!

Also, one more Q - can i spray acrylics over enamels? I'd really prefer to use this than use enamels for AB'ing again !

Rgds,
BP.
Folgore
Visit this Community
Canada
Joined: May 31, 2002
KitMaker: 1,109 posts
Armorama: 0 posts
Posted: Wednesday, August 28, 2002 - 02:50 AM UTC
I spray slightly thinned Model Master Gray Primer through the airbrush (it is enamel). I have never had any problems with it; in fact, I think the Primer sprays nicer than regular paint for some reason. Since you were thinning the primer, I can't see why you would be having so much difficulty. What kind of primer are you using?
As far as spraying acrylics over enamels, I would say it can be done. I seem to remember another thread about that very question, so if you do a little searching, you might find it.

Nic
Sancho0409
Visit this Community
Michigan, United States
Joined: July 25, 2002
KitMaker: 145 posts
Armorama: 0 posts
Posted: Wednesday, August 28, 2002 - 02:54 AM UTC
I primed for the first time about a month ago and it is so much easier to fish when they are primed. I used like drywall primer (to me, paint is paint) at it worked fine, plus its cheap for a gallon, not a half an ounce
 _GOTOTOP