Thanks for sharing

There both great products to use. I've used  VP2050 for over two years, for CRE321 only used a handful of times when it wasn't available. There known as epoxy hybrid high build primer is the reason you can sand it! Nice to see someone else using it, great videos!

Where can I find cre 321?

Can this product be wet sanded or is only dry sanded?  When I was a body shop guy 30+ years ago we did everything wet.  Warm water and a little Dawn soap to limit dust and the soap kept the paper cleaner and washed away the oil from your kin, at least that was what I was told.  
Getting ready to start work on a 1951 5 window truck.  This is the primer I was told to use.