DX330 is a wax and grease remover. If I had a painted panel that
I thought had been waxed heavily or one that was greasy or oily
them before I blasted it I would use a wax and grease remover
to avoid contaminating the sand or leaving residue behind after
the media blasting.
I should have added that after blasting I use a conversion
coating or metal conditioner like PPG DX520. I use a DuPont
cleaner and conditioner that I've had for ages cuz years ago the
paint line that I used mostly was DuPont.
I had the front clip dipped at a chemical stripper back in '09
and the last step after a good rinsing is to spray them with a
conditioner. The parts hung bare from the ceiling in my garage
for a couple of years before I finally got around to working
them. No rust on them which I credit to the conversion coating
which the stripper applied.
http://www.pbase.com/dennygraham/image/138319368/largeNo problems with the paint either, which is about
five years old now.
http://www.pbase.com/dennygraham/image/139199169/largeThe phosphoric acid based conditioners on bare steel, and
galvanized leaves a insoluble, crystalline phosphate layer on
the surface which makes for a good corrosion resistant base
for the next layer, be it paint or primer.
Denny G
Sandwich, IL
