Paint help What preasure

Hey Rick, what product line are you using? Most products will give you a tech sheet. These tech sheets are great info for a beginner. They usually list the suggested pressure for each product such as primers, paints, clears. I have been doing it for so long I usually just listen and adjust by ear though. If you are sure you don't need to re prime any area's and are just going to paint you should use a sandpaper that is also suggested in the tech sheets for your next product. A good place to start though would be around a 400 grit. If you are going to reprime I would use a 180-220 grit as the filler primer will fill those sand scratches. A good way to clean your guns is take a new oil drain pan that has a lid and fill it with laquer thinner, then you can take the gun apart and clean it inside.