I've decided I want to prime with Sherwin Williams P60G2, but I've never used a spray gun before. I've now sunk 3 hours of research into it, including several threads on these forums, and have come up with what I believe is an 80% solution (i.e., I could spend a whole lot more time and money to get modestly better results...not worth it). Now I want to know from you armchair experts to see if there is anything really important I'm missing before I go drop some cash.
Equipment:
Preparation:
Application:
Final:
Fire away!
Equipment:
- Cheapo Harbor Freight purple paint gun with 1.4 tip (https://www.harborfreight.com/20-oz-hvlp-gravity-feed-air-spray-gun-62300.html)
- 30-gal air compressor - 7.7 SCFM at 40 PSI (https://www.lowes.com/pd/CRAFTSMAN-30-Gallon-175-Oil-Lubricated-Portable-Air-Compressor/5000042449)
- Protective gear
Preparation:
- Lightly scuff with red Scotchbrite pad
- Wipe down with acetone
- 1 to 1.75 primer (well shaken) to reducer mix, more reducer if needed
- Strain the primer mix into the cup
- Setup gun for a nice cigar pattern (thanks youtube)
- Not too cold or you get consistency issues
Application:
- 35 to 45 static PSI at the regulator
- Spray 90 degrees to the surface about 6 inches away
- Just enough sprayed on to see that there is something there, not too thick
- Don't take breaks or the primer will harden in the gun (use laquer thinner to clear)
Final:
- Clean up for 7 hours
Fire away!