SPI Epoxy, Advice on Gun Set Up Needed

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PatG

Hi Guys

Well, I'm getting the hang of spraying SPI Epoxy without runs or craters (due to too much paint). I now only open up my flow control about 1.5 turns, which meters out the fluid much more slowly, where a novice painter can keep up.

Quick question. Shooting with a detail gun (Devilbiss SRI Pro, 1.0 tip) and with a Tekna Copper (1.3 tip). Reduced the white epoxy by about 10% to thin it out a bit. In both cases, my spray pattern is much smaller than it should be. I am running the gun's recommended air pressure. (29 PSI for SRI and 21 for Tekna Copper). Any thoughts on how I can make the spray pattern a little taller? Is it due to low pressure or due to the paint being a little too viscous for my tip size?

Thanks in advance for all the help.

Pat
 
Lower viscosity, and/or raising the air pressure will help. In the winter, I like to mix my epoxy, cover it and let induce for an hour. Then put a inch of water in a small painters pail and microwave the water till hot (160-180 deg. not boiling) and set the covered epoxy in the hot water for a minute or two. (Note: too much water and your mixing cup of epoxy will float....adjust level as neccesary) Mix completly, strain it into the gun and spray. The viscosity really thins down and it sprays beautifully. I use a Harbor Freight thermo gun to check the temp after stirring it again...I like 80 - 100 degrees. I would not suggest any warmer than 100. Also, make sure you wipe the water off the mixing cup as you don't want water in your epoxy.

Scott
 
ive also noticed on my sata rp that if i have the fluid out only 1-1.5 turns i cant get a tall pattern unless i turn the fluid out more
 
Thanks guys. I'll try both approaches and let you know how it goes.
Pat
 
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