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Posted

I am new to model building and decided to build the Revell 67 Chevelle Pro Street kit. These lines appeared after I applied a coat of primer. What are they? Will they show up again after I spray the color? if they will, how can I get rid of them? Thank you in advance for all your help!!!

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Posted

It's just where the plastic came together when it flowed into the mould. If you use too hot of paint it will show up. Prime it good and it should be OK.

Posted

I can tell by the photos that you have a bit of "crazing" going on there.

That is a phenomenon that can happen if your paint or primer are too "hot", ie, not designed for use on styrene plastic.

I'm guessing that you used some sort of lacquer primer, which is ok, but there are a few things you need to be aware of.

If using a hot primer or paint,  you need to start with very light coats.

If sprayed on too heavily it will begin to "etch" the plastic, thus crazing.

I would not worry too much with what you have there.

Just sand the body lightly & spray it with a couple more light coats of primer.

That should remedy the problem.

 

Steve

Posted

What Steven said. Sand that primer and those lines will go away. And you really NEED to sand that primer, unless you're modeling a car that's finished in truck bed liner. :blink:

Posted

Sorry, I thought the OP was just asking about the lines in the etching. :unsure:

[broke my first rule about posting here :rolleyes:;)]

Posted

Sorry, I thought the OP was just asking about the lines in the etching. :unsure:

[broke my first rule about posting here :rolleyes:;)]

I believe he was, but it all kind of goes hand in hand.

A little sanding & re-priming should take care of all of it.

 

Steve

Posted

Sorry, I thought the OP was just asking about the lines in the etching. :unsure:

[broke my first rule about posting here :rolleyes:;)]

Well, if you want to split hairs, the word "etching" was not even mentioned in the original post - only the lines exposed after priming.

But since the surface crazing/etching (or whatever you want to call it) also prominently shows up in those photos, and both, the lines and crazing are caused by the same thing (primer too hot) I can see why both were mentioned in the replies. Then a solution was provided (to fix both problems). I don't see anything wrong with that.

Posted

Make sure the primer is thoroughly shaken before spraying it.  The manufacturers seem to be using less "solids" and more solvent in recent years.  If you don't shake the can, you are leaving the solids at the bottom of the can while blasting a higher amount of solvent onto the plastic.

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