Folks,
I need some advice on what procedure and how & what products I need to prep my M47 Pickup chassis before applying an etch primer?
Same procedure as when preparing a fender, etc.
Cleanliness is next to Godliness. That's rule #1.
Just how "crazy" do you plan on getting? That will determine product selection to great degree.
After a very thorough media blasting, I measure "X" to be certain frame is not bent nor twisted.
Then, I do all necessary repairs.
Once the repairs are done, I apply a thin layer of putty to any areas that are not "smooth enough".
The short story? Just like preparing a fender, hood, etc.
Start clean. Even if you have to travel to get it done. Makes all the difference. This is the frame from my 39 Lincoln Zephyr.