I use latex that has been thinned to a 4:1 ratio. i paint the parts on top
of a piece of plywood using an HVLP (high volume low pressure) spray gun. i
start with a primer coat of water based primer then i give it two coats of
latex. for the paint i go to the home depot and choose from the vast
selection of improperly mixed paints for three dollars a gallon. I can't
stress how important it is to take the extra five minutes to clean the gun
good when done. if cleaned and lubricated properly all you need to do next
time is fill it up and start spraying.