deferr,

PPG recommends using their body filler over their DPLF epoxy primer. Then using a 2K primer over the worked areas with either their K-36 , or NCP 271 Primer fillers .
Other products have a different ways of going about it with their products .
What ever system you use find the the recommendations for their use .
Get the product information sheets on the products you area using , it has alot info on those sheets . Like mix ratios, pot life , temp ranges , clean up , and safety ....ect.


And if you go this route you need to use the full PPG line of products , as mixing and matching products is a NO NO , even though alot are successful with using this method .

SprayTech