Everything was stripped to bare metal. Then washed in metal conditioner. Then sprayed with epoxy primer. For the rear fenders only I have done some bondo work on top of the epoxy and then reprimed with epoxy. That is as far as I went. The work maybe a couple of years old now. Would have to find some pictures to get an exact date time line.

So that we are clear, this is a whole new world for me but it is my dream for as long as I can remember. I have learned everything along the way, cutting, welding, shaping, mechanics, electrical and the list goes on, mostly by talking to others. I don't have mentors around me, just don't know any. so be patient with me. Computer surfing is not my strong suit. I'd rather be building stuff. I may get short sounding at times but mostly from frustration. There has been a few times where someone has lead me astray. Probably not intentionally but it has cost me a bunch of money.

Marten wrote:Everything was stripped to bare metal. Then washed in metal conditioner. Then sprayed with epoxy primer. For the rear fenders only I have done some bondo work on top of the epoxy and then re-primed with epoxy. That is as far as I went. The work maybe a couple of years old now.

You should be Good to go with a Good Scuff or light sanding to continue with your Body work then.
Do you remember what Epoxy You used? And how many coats you put down???

Depending on the Brand and quality Epoxy will shrink, IT may be advantages to Scuff/sand it real good and apply another coat of Epoxy before continuing with more body work?????? Perhaps some one else could jump in Here?????
I would do this if it has sat for a few years myself.
This would increase adhesion to anything you put over it.

You could however decide to just Scuff/Sand and go to Hi-build Primer and fillers. This depends on you! It sounds Like you have gotten this far by listening to people who were in the know! and led you in the right direction.

OK, so that is what I was thinking. Perhaps spray a light coat of guide coat firsts then a scuff sand. What grit do I use to scuff sand?

You could use Red scotchbrite and some 180 Grit? I donno? I'm not there looking at what you got close up. But if its good with no orange peel 180 and Scotchbrite should be good.

If you have Orange peel you want to level all that and reapply more Epoxy careful not to sand threw it!
You want a flat base to build on at every stage at this point.
No orange peel, no dry spray, no runs, If your having problems with any of these you need to say something now.

Their are many causes.
Be leave it or not you don't have far to go to having a really nice ride.
Sanding is 98% of a Nice Paint job mostly done by hand. I hope you have a Good assortment of hand Blocks?