paint info needed, what is the best primer to use Options

[freezing14]

i am finaly done fixing the swiss cheeze on the car , it is all gone, i will be soda blasting the car within a couple of days and i will be putting the primer on myself to be able to do the most of the body work myself and i have looked into the different primer and now i am confused?? (IMG:style_emoticons/default/huh.gif) (IMG:style_emoticons/default/blink.gif) (IMG:style_emoticons/default/headbang.gif) (IMG:style_emoticons/default/headbang.gif) i will be using the omni line of paint from PPG and there is a couple of different primer--
the epoxy etch, but it contains chrome ( very toxic) so reject as i have a home made paint booth
the regular epoxy but apparently it is not sandable ( wtf it means)
then there is the high build 1K no epoxy ??
then the high build 2K epoxy

the car is strait and very little pitting on the outside i had to joint the quater panel half way and i did a couple of patch but they are but weld so very little bondo

what is the best price versus quality way to do??

I know i have to primer, putty, primer and then paint , which one should I use for which

thanks you very much for your help

(IMG:style_emoticons/default/headbang.gif)

[tdgray]

I've never baked filler and good fillers have little air and don't shrink. Besides, if you work the metal correctly, you should have a very thin coat to finish with.

Doesn't have anything to do with air.

Fillers shrink as they dry, it's a fact. All of 'em. Just some more than others.

I do agree with your comment on sticking with one system though. Certain brands do not interact well. The most specific example of this that I can think of is when GM in the late eighties - early ninties mixed different clears and base coats and had delamination problems, although they blamed the paint companies for it (IMG:style_emoticons/default/wink.gif)