What's the point of primer when painting. And also, why sand? I haven't really spray painted before, and I always see people talking about laying down primers first, and even sanding it down first. I have a case that I want to paint black, would I have to sand the original paint on it first, or can I just leave it like that and just spray on a new coat of black? And how does primer fall into play here as well, if it does that is? Thanks.
1st the idea of sanding is to roughen the surface to help the paint stick, the primer then forms a base for the paint to go on. Have a quick look in my log , there's a very simple explanation of how it's done, if you need more info there's a few guides on the forums of give me a shout and I'll walk you through it.
Don't use any primer and don't sand, and you'll soon find out the point. Hey, nothing like learning from experience.
It will look like a rough piece of ****, it will peel because the paint didn't stick and there will be bubbles
I've repainted cases, where the original paint (which would have primer under it so it sticks to the metal) was in good condition, so I all did was sand the original paint a little so it was all roughened, then painted and they came out smooth, and tough enough to last for years, without any chipping or peeling.
Let me make it clear, you don't need to sand down to the bare metal is there is no rust. If there is rust then sand down to the bare metal, prime, then paint sanding in between coats.
