Where and when do I use Epoxy Primer on my project?

In the past self etching primer was the go-to coating to apply over bare metal on a car. Metal required little prep work to apply it, it flashes/drys quickly, and it came in 1K Aerosol cans for small jobs. In the past 5-10 years you've probably been hearing more people talk about Epoxy Primers and their use as opposed to self etching primer. We decided to give you some insight on where and when epoxy primer works best.