From personal experience, this ?works? for interior paint: Duplicolor Engine Enamel over Sherwin Williams 988 (similar to NAPA 7220) or Duplicolor Self-Etching Primer. Seems to be Very Durable IF the prep is good (Scotchbrite, Lacquer Thinner, and Primer) and IF the parts are set aside for a week (warm) to ten days (cool) to allow the enamel to harden sufficiently. Two-part epoxies are more durable and set much more quickly than rattle can enamels, though.
My ?2 Cents? Only: Rattle can advantages are "adequate" and "convenient" offset by a very slow hardening time. Two-part advantages are "professional appearance" and "high durability? offset by a somewhat more complex application process, but two-part application is no problem for those who are familiar with a paint gun. It's a Trade-Off of Results, Money, Skills, Time, and Application Equipment . . . It?s also one of those ?never-ending debate? things! Bottom Line: It?s Your Choice!
Good Luck!
Bill Palmer
