What did I do wrong?(paint problem)

Gonzowerke · Post by **Gonzowerke** » Tue Nov 01, 2005 9:19 am

I spoke too soon in another post about having no problems.

I went to lay down my first layer of panelling today, before heading out to work. When I peeled up the Latex, the paint came with it. Where the paint stayed, it had my brushmarks from the Latex in it. I went to the saucers, that I have not latexed yet, and I can rub the paint off with my thumb.
I washed and dried the parts with a good soap and warm water before
spraying on my Silver basecoat. I let the basecoat dry for 4 days before latexing. The saucer's have had even longer to dry.
Should I have used primer? I've never had this problem before.

Thanks,

Gonzo

Griffworks · Post by **Griffworks** » Tue Nov 01, 2005 9:27 am

Always use primer on a model.

Always.

That's what it sounds like your problem is. Strip it and start all over again.

Always use primer on a model.

Blappy · Post by **Blappy** » Tue Nov 01, 2005 9:31 am

Moving this to finishing...

Stingray · Post by **Stingray** » Tue Nov 01, 2005 9:33 am

Is this resin or styrene? I always use commercial mold release remover on resin. Those kits always seem to have more or stronger mold release agents on them.

-S

Padawan v 2.5 · Post by **Padawan v 2.5** » Tue Nov 01, 2005 10:22 am

I've found that many metallic paints have more serious adherance problems than do normal paints. Always prime when using metallics.

P@T

Post by **TER-OR** » Tue Nov 01, 2005 10:53 pm

Always prime with metallics. And always overcoat with a GLOSSY clearcoat when doing lots of masing. Even a fine layer can help protect.

LuiS_42 · Post by **LuiS_42** » Wed Nov 02, 2005 12:30 am

Always use primer on a model.

Always.

That's what it sounds like your problem is. Strip it and start all over again.

Always use primer on a model.

Always prime with metallics.

AND dont forget, Prime your model..

Gonzowerke · Post by **Gonzowerke** » Wed Nov 02, 2005 8:34 am

So let me get this straight.....

I should always prime my models?

I have never had a problem like this before. But I guess the large surface area of the 1/350 PL NX-01 brought it out. How long should I let Testor's spray enamel dry before I Future it? A week? Longer? AAARRGGHHH, I want instant gratification and can't have it!!!

Thanks for all the help!

Gonzo out.

Stingray · Post by **Stingray** » Wed Nov 02, 2005 9:58 am

Gonzowerke wrote: I want instant gratification and can't have it!!!

That's the only part of this hobby that I don't like. When I'm really rolling, I hate to have to wait for paint to fully cure. That's why I usually have a couple kits going at once.

-S

Kekker · Post by **Kekker** » Wed Nov 02, 2005 11:36 am

Another issue might be with your masking. Are you using the white liquid latex like you'd use for making molds? That has ammonia in it as the solvent, which would attack some kinds of paint - acrylics especially.

Just a thought. Personally, I almost never use a liquid mask on most paints due to the fact that they can leave marks on the paint when removed. Tapes, Parafilm, metal foil and regular masking solution if I need to just seal a little hole in the masking.

Another handy tip - never use clingfilm plastic films on metal finishes! Made that mistake once on a P-51, and had to strip and re-do the paint. The softeners in the plastic damaged the surface of the paint.

Kev

durendal · Post by **durendal** » Sat Nov 05, 2005 12:44 am

As I understand it, primer is used to make the paint stick. So it is always necessary to prime before painting.

Post by **TER-OR** » Sat Nov 05, 2005 1:35 am

durendal wrote:As I understand it, primer is used to make the paint stick. So it is always necessary to prime before painting.

Nope.
I've got a cabinet full of models which say you're wrong. Some of them are pretty good, too.

CLEAN is the key - acrylics, espescially require clean plastic before painting.
Resin, though, I do prime first. Metal, too.

durendal · Post by **durendal** » Sat Nov 05, 2005 2:51 am

TER-OR wrote:
durendal wrote:As I understand it, primer is used to make the paint stick. So it is always necessary to prime before painting.

Nope.
I've got a cabinet full of models which say you're wrong. Some of them are pretty good, too.

CLEAN is the key - acrylics, espescially require clean plastic before painting.
Resin, though, I do prime first. Metal, too.

Ah, I see. Well, I guess it depends on the model your assembling and the paints your using. I've had many experience with enamel and acrylic paints, and they just don't stick too good without primer. You can easily scratch the paint off without primer.

Post by **TER-OR** » Sun Nov 06, 2005 5:26 pm

A fine coat of Future makes the layer of acrylic much more resiliant. I wont' use masking tape until I overcoat. You're right about that - even with primer sometimes...