I'm switching back to waterbase products after a few years of spraying solvent precat. I've got Fuhr 380 coming to the shop soon and I would like to get my Kremlin system prepped to spray it. I figure a good flush with lacquer thinner, a gallon or so, and then change out all filters I can get to, run denatured alcohol through, and then flush with a lot of water would be good. Any advice on what tip to use? I think I have the smallest tip available in the gun now. If anyone has done this can you please give your schedule for doing it?
From contributor G:
I would go with acetone in place of the alcohol and then use some water cut with the Fuhr universal cleaner. Your tip size should be about the same. Just make sure you watch for build up as you spray, I keep a brass brush handy to knock the build up off. Then you should be good to go. Also, for what itís worth, I really like the 345 finish, especially the dull. It has a wax component that is very close to a solvent look. I've been spraying Fuhr exclusively for about a year and a half now, I will never go back.
I use a 11/1000th tip set in my MVX gun, with the Kremlin 10:14 pump set at 20psi on the fluid pressure and 20psi set at the atomization pressure when spraying Target coatings EM6000 Lacquer. Move up to a 14/1000th if you plan on spraying their EM2000wvx. Keep the same settings. Shoots like glass.
Solvent to water: lacquer thinner, acetone, water, coating
Water to solvent: water, acetone, lacquer thinner (probably redundant) coating.
Fuhr told us their cleaner will cause fish-eye. But if you're cleaning regularly you shouldn't really ever need to flush with it anyway - just soaking the gun etc. Kremlin makes a "Bubble Buster" tip specifically for waterbornes.