Base coats are the colour coats you first spray when using a base coat, clear coat system, this is the most common way to spray a car.
When using them one important thing you will want to learn how to do is blend base coat through a blend panel to insure that the new colour you're spraying looks the same as the old colour on your car.
Blending base coat
is only done when repairing a car and painting it the same colour, not when respraying the whole car a different colour.
Spraying down your base colours are very easy to do just as long as you know the basics about the colour you have selected to use. Make sure when spraying with base coats you do a few more coats then needed. Why? Because alot of base colours a very transparent, meaning they do not cover well and require more coats then usual. It helps to have bright lighting to make sure you can see if the colour has covered fully. Common transparent colours are bright reds.
If you're wanting to paint your car silver or any other colour with alot of metallic in it, you're going to want to use the basecoat clear coat system. This is because silvers and colours with metallic in them require a few coats to be sprayed called technique coats or dust coats. This will make the metallic in the paint sit nicely and look even instead of looking all blotchy and streaky. You can still use a 2k colour system to paint silvers but I don't recommend this for beginners because it's the hardest 2k paint to spray.
Basecoats are the only paint that can be sanded 5 minutes after spraying if you have a slight troubled area. Note: Only wet sand using water with p600 grit sandpaper or higher. Remember it's normal for base coat paint to go dull and have no shine in between coats. Thats what the clear coat is for.