In order to test out the never-ending primer debate, I tested out a few different primers. I plan to leave them outside for a long time and see how they age.
- Zinc Phosphate Primer (Aircraft Spruce)
- 7220 Self Etching Primer (Napa)
- Rust-oleum Self Etching Primer (Home Depot)
- VpCI-373 (Cortec)
- Untreated Control – Left Outside
- Untreated Control – Left Inside
Sling 4 TSi Builder 
One thought on “Primer Experiment”