the metal and air can be a problem. Activated primers are sensitive to
temperature and will not dry properly when it is less than 60 degrees. If
primer is applied to metal that is substantially colder than 60 degrees, it
can cause primer failure by de-lamination.
Cleaning a part with wax and grease remover is a simple and basic
step toward ensuring a long-lasting result. Substituting other
solvents can lead to poor adhesion, “fish eyes” and a generally
substandard paint job.Epoxy primer
Epoxy primers provide the best adhesion to bare metal and generally
give the longest-lasting finish. Epoxy primer generally mixes four parts
primer to one part activator, and one-half to 1 part urethane-grade
reducer (the variation is for larger/smaller tip sizes on the spray gun).
Once the epoxy primer is mixed, it needs to induct for 30 minutes.
This isn’t optional. Induction is required on just about all epoxy
products, regardless of brand. While a five-minute mechanical agitation
is great, most enthusiasts won’t have a paint shaker, so regular stirring