We'll be doing a demo of two part splash paints primer and you need to mix 4-to-1 for part primer, one part activator, you mix them all together and then you want to shoot around 15 to 20 psi and up to 25 psi if desired. You want to make sure to sand down the surface at least 1000 or 2000 at the most. So you want to prime the surface because you want to have the primer to grab onto the surface of course and also it will just have a more durable finish in the long run. You want to use 0.4mm needle for the airbrush instead of 0.15mm or anything smaller because it will make the primer dry mid-air which means it will have flaky surface which means you have to do another step of sanding which you don't want to do before pulling the base coat. So this is the comparison photo of the 0.4mm and 0.15mm and you can see that 0.15mm sprayed out very flaky dried mid-air but if you use a 0.4mm needle for the airbrush you'll have no issues whatsoever. So make sure to use 0.4mm or bigger sized needle for your airbrush. And thank you guys for watching and make sure to grab yours today at splash-paint.com.