crashtech
Combo Man & Mod
I'm pretty sure that SPI epoxy primer is stronger than the average filler. Using it during the straightening process is a different way of doing things that has many advantages. I would invite you to try at least one panel with the multiple epoxy application method to see how you like it, even if you do decide to skim the whole panel. In my experience it took me to the next level.
Epoxy can be recoated with filler with no sanding inside the recoat window. (Usually I scuff it after 72 hours though)
SPI epoxy has some film build, not as much as urethane but way more than other epoxy primers.
Epoxy seals the metal and filler against moisture intrusion.
SPI epoxy is semi-glossy. Blocking removes the gloss, revealing imperfections immediately.
Unlike urethane primer, SPI epoxy is designed to have filler applied over it. So no more sweating over putting glaze over 2K, which is kind of a "no-no."
There's more, I'll let others have a turn at listing the virtues of the epoxy...
Epoxy can be recoated with filler with no sanding inside the recoat window. (Usually I scuff it after 72 hours though)
SPI epoxy has some film build, not as much as urethane but way more than other epoxy primers.
Epoxy seals the metal and filler against moisture intrusion.
SPI epoxy is semi-glossy. Blocking removes the gloss, revealing imperfections immediately.
Unlike urethane primer, SPI epoxy is designed to have filler applied over it. So no more sweating over putting glaze over 2K, which is kind of a "no-no."
There's more, I'll let others have a turn at listing the virtues of the epoxy...