29Tons - When you purchase the paint, they should give you a Technical Data Sheet that will provide what size tip is recommended, same goes for primers, etc... If they don't give you one, ask for one. Also you can go online and search and find technical data sheets for most popular paints. I'm no expert myself, just an amateur, but I like the gravity HVLP type guns.

Ron - - Dusty53
1954 Chevy 3604
In the Gallery Forum
"You can't dance with the Devil and then wonder why you're still in Hell."
"They will forget what you've said, and they will forget what you have done but they will never forget the way you made them feel."