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I've spent a good deal of time in the body shop threads and I have to say, I am impressed with the amount of time people dedicate to sharing there knowledge with potential do it yourselfers. Alot of the threads are very accurate. There are only a few things that I haven't came across that are important steps, or procedures to remember when painting your kat
First, whether you are using rattle cEeans or a spray gun, remember, paint does not stick to bare plastic. As long as you dont sand through the original paint, this shouldn't be an issue. Primer alone does not stick to bare plastic either. I have seen paint and primers in rattle cans that say they stick to plastic, I can't say personally if they work or not. I can say however, in the event that you must sand through your paint down to the plastic, (any areas bigger than a quarter) I highly recommend using an adhesion promoter before you prime. These products are available in lots of forms the rattle can types sold at napa made by SEM work great.
There are two types of adhesion in the painting industry. Mechanical and chemical. Mechanical being sanding a part to create a rough surface to promote adhesion. The second is a chemical adhesion that relies on a chemical to change the wetability of a substrate thus creating a chemical bond. Chemical is the only type of adhesion that works on plastic. Period.
Another Pointer is for those of you who who plan to put decals on your color coats before you clear. There is nothing wrong with doing this. But you must be patient and allow proper dry time before sticking you decals. If you place them too soon, they will develop air bubbles that will appear about 10 mins after placement. You must realize when your base coat is drying, it is releasing solvent into the air that can't be seen until something like a sticker traps it. I have ruined my fair share I now wait over night, and have been problem free. I have even Waited as long as 2-3 hrs, and still developed bubbles. Its extremely frustrating because they are air bubble free for a while, then you walk away and come back and it looks like it has pimples.
All in all thanks for all the informative write-ups. Im about to undergo a headlight mod thanks to some incredible knowledge shared here. Thanks to all
First, whether you are using rattle cEeans or a spray gun, remember, paint does not stick to bare plastic. As long as you dont sand through the original paint, this shouldn't be an issue. Primer alone does not stick to bare plastic either. I have seen paint and primers in rattle cans that say they stick to plastic, I can't say personally if they work or not. I can say however, in the event that you must sand through your paint down to the plastic, (any areas bigger than a quarter) I highly recommend using an adhesion promoter before you prime. These products are available in lots of forms the rattle can types sold at napa made by SEM work great.
There are two types of adhesion in the painting industry. Mechanical and chemical. Mechanical being sanding a part to create a rough surface to promote adhesion. The second is a chemical adhesion that relies on a chemical to change the wetability of a substrate thus creating a chemical bond. Chemical is the only type of adhesion that works on plastic. Period.
Another Pointer is for those of you who who plan to put decals on your color coats before you clear. There is nothing wrong with doing this. But you must be patient and allow proper dry time before sticking you decals. If you place them too soon, they will develop air bubbles that will appear about 10 mins after placement. You must realize when your base coat is drying, it is releasing solvent into the air that can't be seen until something like a sticker traps it. I have ruined my fair share I now wait over night, and have been problem free. I have even Waited as long as 2-3 hrs, and still developed bubbles. Its extremely frustrating because they are air bubble free for a while, then you walk away and come back and it looks like it has pimples.
All in all thanks for all the informative write-ups. Im about to undergo a headlight mod thanks to some incredible knowledge shared here. Thanks to all
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