Something I have not seen any mention on, referring to rattle can paints, and thats the cure time they have. It can take days for a lot of them to actually cure. Not dry.. but cure. Theres a huge difference.
Anyone thats gone this route will know, if you have a blemish that will require touching up, you will have to wait.. and wait.. and wait.. and WAIT. These paints will remain soft for quite awhile.
Use of a rattle can primer is a nightmare for anyone thats excited to see results, and are impatient in any way. Even these primers will take forever to dry enough to just sand smooth for a coat of color.. (of course, theres exceptions to everything, this is my exp speaking)
Another thing is, rattle can primer is sooooo stinking thin, you cant use it as a filler at all. There are a few thick ones, but there again.. youll be waiting hours to sand one coat down, to apply the next.. verses an automotive grade mix primer, spray on, sand in 10-15 mins usually, spray another coat.
Aside from that, the most important thing for anyone to understand, that has intentions of taking on a project as serious as painting their car is, your paint will only be as smooth as the surface you spray (or roll
) it on. I dont know how many people I have seen over the years prep and prep their car's body, only to spray on primer, and go directly into color.. without even scuffing the primer. SAND THE PRIMED SURFACE SMOOTH! otherwise, your paint... no matter how you apply it, will be rough and dull.
Heres a civic I been working on.. though, I use the traditional Base coat/Clear coat.
Index of /img/98-civic-hb
Just figured my 2 cents might save someone out there some trouble.