Lacquer Primer?

[moribundman]

For my top secret project: what kind of primer adheres very well to bare, rust-free steel? Something like Rustoleum bare metal primer doesn't adhere well enough. I want something that can be sprayed and that goes on very thin and evenly. It must be compatible with an acrylic enamel finish. Any recommendations?

 

[Steve S]

Go to a paint store that specializes in auto paints. The staff should be able to help.

 

[moribundman]

I need only a consumer appropriate quantity.

What about a selfetching primer?

 

[Steve S]

Where can you get self etching primer other than a paint store?

 

[moribundman]

I see Dupli-Color selfetching primer at Autozone. Does it adhere better than regular primer?

 

[Pablo]

Originally Posted By: moribundman
I see Dupli-Color selfetching primer at Autozone. Does it adhere better than regular primer?


It adheres OK. But if the surface is flaking oxides and salt encrusted it won't work. Trying to paint oily steel?

 

[Pablo]

This stuff works well, is thin if you spray it:

http://www.por15.com/

But whatever you use, use this prep juice:

http://www.por15.com/prodinfo.asp?grp=MR&dept=2 to prep the surface after it's clean.

 

[moribundman]

Thanks. I have to prime some clean, rust-free steel and white metal (tin.bismuth/copper/silver alloy) pieces. I do have a phosphoric acid metal cleaner.

 

[Shannow]

I found fish oil gave a pretty good stick, back in the day.

 

[moribundman]

Linseed oil, followed by fish oil based primer is what I used on my Chevy's undercarriage.

However, in this case I need a THIN layer of primer. Ideally I'd use an airbrush.

 

[alreadygone]

Zinc Chromate, comes in spray cans. Really tenacious stuff.

Bob

 

[Pablo]

Originally Posted By: alreadygone
Zinc Chromate, comes in spray cans. Really tenacious stuff.

Bob


Would mori's paint adhere well to zinc chromate?

 

[moribundman]

Does zinc chromate go on thin?

 

[alreadygone]

Pablo, I think so, it's primer, might need light scuff with Scotch-Brite or such, but I've never had any problem with coatings coming loose.

Mori, the spray can type is a very thin coating, I've also used a brush on version, but it's more the consistency of house paint.

Bob

 

[TooManyWheels]

Zinc chromate, or weld-through primer, which is zinc only.

Two part epoxy primers are technically better, but not practical here.

 

[tom slick]

an automotive paint store will carry self-etching primer and regular primer in spray cans. you have to use both types as self-etching is sort of a "primer" for primer.

 

[moribundman]

The Dupli-Color went on sufficiently thin. It seemed to adhere well enough. I did use another primer over it. Thanks all!