Black epoxy primer would have been a good idea now that you mention it. Grigg, do you have to scuff the powdercoat before applying that PPG DP-90? Is that a special primer that adheres to powdercoating?
Yes, needs to be scuffed with a scotchbrite, it's just regular primer, but it's really good stuff, and stands up to the weather great even when used as the final coat, also looks about right as far as color and texture for our old trucks.
My two choices were to use DP-90 after sandblasting the bare naked frame, or to powdercoat. I chose powdercoat, but because I am still building he truck I am having a few scratches and rubbed places here and there. If the truck was done before I had it coated and all I had to was reassemble that would be great, but I am still fitting, fabricating, and drilling holes.
I am still glad I had it powdercoated, but in the end I may need a good coat of DP-90 over the whole chassis minus engine and trans, then reinstall them and the sheet metal and be done. That way I get all the bolts and stuff painted, that otherwise I have to do as I install them.
Grigg
