Model Painting help

[Jasoncmor]

Hi all.
Model is a Tamiya R33 GTR Vspec.
The model was lightly sanded with 800 grade wet / dry sand paper.
Then washed in warm soapy water and left to dry.
I applied a very light coat of Tamiya Plastic Primer, then after that dried sprayed another light coat, but slightly heavier.
After that dried, I added another 2 coats of primer, not too thick, but it looked spot on after I had finished it.

I left the model to dry in a food container, with the lid on and a small hole in the bottom for 24 hours. ( that was yesterday)

Today, roughly 24 hours later, I lightly sanded the primer with 2000 grade sand paper and washed it again left to dry.

The paint is Zero-Paints Midnight Purple LP2.
Air brush is just a cheap hobby one, nothing special, but its good for a beginner with air brushes.

I sprayed a very light coat of the paint and gave it time to dry and then sprayed another light coat of paint, still could see a little primer through the paint.
After that dried, I gave it another coat and noticed the paint look funny.

It felt rough too.

After it had dried, I wet sanded it with some 1200 grade sand paper and let it dry off, then started airbrushing again.

The bonnet and roof where I spend most of the time sanding look better, But everywhere else looks the same.

I'm wondering weather this is what you call shrinking effect with the primer?

I've used food containers with this model to try and keep dust out of the paint work, with just a small hole in the bottom.





I need help.
I don't know what this problem is?

Thanks

[Some_Kid]

Looks like you need thinner.

[Jasoncmor]

How can I strip the paint off the model?
I stripped another model off the other day using some revell painta clean, with a non scrtach pad, but apart from the price of it, the smell is so deadly, it leaves me gasping for air.
Paint comes off quite easily, but you need to scrub it really well and you need to sand the model after aswell because the surfaces are left rough.

[Some_Kid]

I think the best way is to store some break fluid in a tupperware container. Keep it in a safe place. It will strip the paint in about a day. Keep tabs on it.

[pharr7226]

Originally Posted by Some_Kid

I think the best way is to store some break fluid in a tupperware container. Keep it in a safe place. It will strip the paint in about a day. Keep tabs on it.

I've forgotten about parts and left them in brake fluid for over a month with no bad effects on the plastic.

[Jasoncmor]

Does it matter what type of brake fluid I use?
I just looked on eBay and there are different types like DOT 3, DOT 4 and DOT 5.

Cheers for your advice.

[Some_Kid]

I use DOT 4 and you can get it at Walmart or autozone, no need for ebay.

[MidMazar]

any brake fluid. Also 91% alcohol works just as good if not better and its cheaper. Usually $1 at your local drug store.

[MPWR]

Do not use brake fluid. DOT 3/4/5 can destroy any plastic part at any time. It may not destroy all parts- but you would be unwise to place in it any body (or other parts) that you cannot cheaply and easily replace.

Iospropyl alcohol is entirely plastic safe, and it will strip automotive lacquers very effectively. It is also much less toxic (for you/your family/your pets/the environment/etc), and easier to dispose of.

Originally Posted by pharr7226

I've forgotten about parts and left them in brake fluid for over a month with no bad effects on the plastic.

And that means precisely nothing.

You can put an antelope into a cage with a lion. He might last an hour. He might last a weekend. But even if he does, it in no way means that lion's cage's are a good place to keep antelopes.

Sure, everyone knows that brake fluid will destroy paint. But a good paint stripper that does not make it.

[countach79]

Originally Posted by MPWR

You can put an antelope into a cage with a lion. He might last an hour. He might last a weekend. But even if he does, it in no way means that lion's cage's are a good place to keep antelopes.

awesome analogy! poor little antelope

[Didymus]

If the paint looks rough and pebbly when you're applying it, it's too thick, and it won't smooth out as it dries. Don't worry about coverage; thinner paint will cover just fine.

For stripping, I like Purple Cleaner from Allied Auto Parts, or 91 percent isopropyl alcohol from the drugstore. You can also try mixing them or using them in tandem. After a three-day soaking, use a brass brush to remove the residue. It won't damage the plastic like sanding will.

Good luck!