to sand or not to sand thats the question

[inhrmswy]

I have just gotten my car into its first coat of epoxy primer.  (I took the entire car down to bare metal)  My question is, do I need to wet sand the epoxy primer before I put on the high build sanding primer or do I just put it right over the top of the epoxy with no surface prep?   Thanks in advance.
Keyton

[Silver R/T]

no you do not usually sand epoxy primer, but you do sand primer surfacer. I would go over with wax and grease remover and then tack it and then youre ready to shoot it

[mopar_madman]

depends on the product and the window you have to recoat. if you spray the high build within the recoat window its fine but sometimes when fully cured you may have to just scuff the surface before adding another primer. Check with the manufacture some are different.

[MGBRingo]

I would sand it, especially if it has dried for a few days or more.

[Silver R/T]

I wouldnt let it sit for while but as soon as flash time passes spray it with surfacer

[Drop Top]

Most epoxy primers have a wind of 12 to 24 hrs. The only one that I know of with a bigger window is PPG's DPLF line of primers. From what I'm seeing here. If you haven't already sprayed it. You need to scuff the car first. Its better to be sure the blocking primer will stick now then to have to worry about it latter.