[kenparker0703]

back to the OSPHO. i get it at the local hardware store. Somewhere between 25-30 $ a gallon. Gallon goes a loooooong way. If spraying wear a respirator. U dont wanna breathe those spray fumes. I brush it on with a cheap HF 1 inch brush. Then with gloves on wipe the excess off with a rag or heavy duty paper shop towel. Let it sit for 24 to 48 hours - takes that long to fully dry. Once dry wire brush the iron oxide grains off.



Ospho is diluted version of Phosphoric acid. Read the ingrediants of your Coke. The acid turns the red oxide (rust) into iron oxide - dark grey and somewhat rough.


Before paint or prime the roughness will need to be wire brushed of or sanded. ken