Anybody have any experience prepping the body, etc for paint after having it dipped ?? What's the process or steps ??

I have a lot of cars dipped. I always have them E-coated. Now I do have a local guy dip just doors, hoods, etc. I wash them with metal prep, sand and epoxy.

I watched a good Youtube video after posting the question. Looks like scrubbing every surface with scotchbrite then multiple wipe downs prior to epoxy is the way to go. What's the trick to doing the underside, interior and all the little nooks and crannies?

I have seen problems in the nooks, crannies, seams, lips, etc. The dipper needs to wash, wash, wash all those areas when the piece comes out and is still wet. But they often don't take that much time.

After the thing dries it is much more difficult to deal with the caustic that is still trapped. If it is not COMPLETELY removed/neutralized it will cause real issues.

I still like Redi-Strip and the like for some things like wheels, bumpers, blocks, axle housings, brake drums, etc. But I no longer take car bodies or their panels because I have seen too many problems crop up after the car is finished.

I've seen lots of problems with the seams and joints as well. That would be my worry.

Well, I'm past the "worry" stage. Given the condition of the car I'm definitely taking the "dip" route. The issue is the prep before priming.

I think different dippers do it differently.

Some use some water to get the surface clean.

Others use a LOT of water.

Others use multiple tanks to get it back to PH neutral.

I think you have to baby sit them through the process to make sure they do a very good job.