here is what I use to do paint fill projects with professional results and no clean up.
needle tip bottle
you are likely to find all these items at Wal Mart to save on shipping charges.
add a few drops of thinner to the paint you intend to use to thin it down then reapply the lid and shake for a few seconds then pour the entire contents into the bottle add a few more drops to make sure the paint will flow good then just swirl it around a few seconds so the thinner will blend into the paint. you are then ready to paint dont squeeze too hard
when you finish squeeze the remaining paint back into the Testors bottle then pour about a half cap full of thinner into the squeeze bottle and shake well then empty by squeezing the thinner through the needle then repeat the process once more to remove the remaining paint residue from the bottle and inside of needle by squeezing the thinner through the needle, repeat the process again if necessary.
you can then re use the bottle for another color. you will always need to remove the paint when not in use to keep the paint from skinning over and cloging the needle.
if you keep the bottles and needle clean they will last a very long time
you will need to use the Testors acrylic paint thinner with the Testors acrylic paint to insure not to damage the guns finish but you can use another type of paint thinner for clean up which I recommend since the testors thinner is a bit on the pricey side for such small bottles. do not use Lacquer thinner because it can melt the bottles. also you might want to consider buying additonal bottles if you plan to use multiple colors this way you can prep the paints at the same time that way you are not having to do a lot of clean up when switching colors.
my method is probably a little more expensive but I guarantee high quality results.
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