Spi epoxy primer

[TheFishBox]

Quick question my cab was coated with spi epoxy primer a year ago and I am getting ready to do the body filler, can I just scuff the old epoxy and then coat with rage body filler? Or do I need to scuff the epoxy and then shoot a coat of epoxy again?

 

[legopnuematic]

I don't use SPI personally (Tamco guy here), but it should be the same as most epoxies, past the recoat window typically just scuff with 120-80grit and should be ready to go onto filler work.