I believe some stuff doesn't need primer. I don't prime a frame and I don't prime a tractor other than the sheet metal.
Why bother with the primer, put two coats of paint on.
The factory didn't prime the frame first and I don't find any primer under the tractor paint.
I'm not saying there is no use for primers, only that some times I don't bother with it.
Primers that seal or lock in rust are good, but sometimes I feel I can get to carried away with this idea of making something in-destructible.
Dan
