I have a water bottle I mix with water and purple power that I use to clean out the gun between colors. After a good week of painting I take lacuqer thinner and really clean out the gun needle and tip etc. Then I use spary gun oil and oil the parts. Sometimes when you think its clean it still has left over dried up paint that is hard to get out with just water or alcohol. Keeping your guns clean is the #1 thing that is key to painting good baits. A clean gun is a happy gun.
The Rookie