[dataway]

Within a week or so I will be rolling the body outside for sand blasting areas such as the firewall, door jambs, window channels etc.

I have treated some of the areas, underside of roof, front body mount cavities etc with Ospho .... after reading all the dire warnings on the SPI forum I didn't find any info on neutralizing these areas. How is that done?

Also, after reading some of the seemingly extreme prep needed for epoxy primer it kind of makes me lean toward a basic direct to metal enamel like the factory used.

The steps for the SPI epoxy seem to be degrease, mechanically clean or blast, water born cleaner, solvent cleaner, possibly scuff with marron pad, blow it off, tack rag it, then shoot the epoxy?

What are you opinions on a DTM enamel versus the epoxy? I have seen plenty of firewalls that were blasted, wiped with typical solvent cleaner, blow off the lint and painted with DTM that still looked fine 20 years later. The stuff is not picky and still stick to just about anything. Worth the extra steps to use epoxy? Bear in mind I'll be dead in 20 years.

How about door jams and trimming? Should use the epoxy in those locations if I plan on a BC/CC paint? Obviously I can't use a DTM enamel there and have to use some kind of primer. Using the epoxy in all locations would simplify the spraying of course.

The SPI forum has me somewhat paranoid about the adhesion of the epoxy.