effect of paint

[kyuuketsuki]

dear all

ive got another question on spray painting and its effect.

this happens after spraying on the same body ya. some area became shinny (glossy) while other areas turned out matted finish. Why is this so? The colour i used was italian red on austin mini cooper.

Thanks all

[RallyRaider]

Did you use primer? If not the effect could be due to the different grain of the plastic reacting differently to the paint.

[Vric]

Could be humidity, inconsistent paint coat, inconsistent paint distance and more and more..

[kyuuketsuki]

alright. erm.. what can be done to remedy the body now?

[klutz_100]

Probably sanding, rubbing compound/polish and wax will help.
Maybe this will help - a recent experience of mine

[kyuuketsuki]

Does wet sanding literally means wetting the sand paper with water?
When is wet sanding applied and to what situations?
what is its effect?

thanks guys!

[cyberkid]

Originally Posted by kyuuketsuki

Does wet sanding literally means wetting the sand paper with water?
When is wet sanding applied and to what situations?
what is its effect?

thanks guys!

Yes, wet sanding means sanding with water. Some people sand under running water (me included).

Wet sanding is usually used when using finer grain sand paper ( 1000 and above). Wet sanding will give you a smoother result than dry sanding and the water will wash away the 'dust' that sand off, thus making it much cleaner than dry sanding.

[stevenoble]

Originally Posted by kyuuketsuki

dear all

ive got another question on spray painting and its effect.

this happens after spraying on the same body ya. some area became shinny (glossy) while other areas turned out matted finish. Why is this so? The colour i used was italian red on austin mini cooper.

Thanks all

I have had this problem on a few occasions where the paint has gone matt whilst drying.I asked a spraypainter friend of mine and he said that it usually happens when the temperature is too cold or when the air is moist and humid.As the paint dries it sucks in the moisture from the air which causes it to 'Bloom' (Go Matt) If you spray in a warmer place or when the conditions are not humid it should stop it from happening