paint running off

Thank you all for the replies I finally took some sanding paper to them and the paint stuck.

Bearcat57

He said he washed several times with Dawn and 90% alcohol. That should've been enough to remove the oily residues.

 

You're correct. I must've overlooked that part. Maybe you over thinned the primer and paint? Did you add the the thinner to the bottle of primer and/or paint bottle? If so, that's never a good idea.

Other than that, I have no idea except contamination coming from somewhere.  

Although, you did mention you cleaned it "several times" with Dawn and alcohol. Once would have been enough, not several times. I wouldn't be surprised there's still too much dish soap residue lingering on the parts.

He said he washed several times with Dawn and 90% alcohol. That should've been enough to remove the oily residues.

Did you wash the spruces before applying primer and paint? Sounds to me there's still some oily residues from the moldings.

Sounds like some kind of contamination is preventing the paint from sticking. Maybe try soaking the parts in a degreaser and scrubbing with a soft brush.  Maybe even use some fine sandpaper to rough the part up a bit if possible to do so, this may give the paint something to stick to.

[quote user="GMorrison"]

Yikes! They are just plain styrene? I will say that I'm no fan of the Tamiya Flat Black, is it XF-1? Try Testors NATO Black.

It's plain stryene the paint is x-1 I've painted other parts of model with same bottle of paint had no problems with it

Yikes! They are just plain styrene? I will say that I'm no fan of the Tamiya Flat Black, is it XF-1? Try Testors NATO Black.

[quote user="GMorrison"]

Primer

Primer won't stay put either

Primer