Ospho question

Mike(NEOhio) · Jan 20, 2023

My first time using it on some small parts. It seems to leave a coating after it dries. Should that be wire brushed or just primed right over it?

WESnIL · Jan 21, 2023

Prime right over it.

showcrop · Jan 27, 2023

I wonder what sort of coating? white powder? and how much? I use other brands of rust converter and sometimes I get a white powder. If there is much I wash it off.

Mike(NEOhio) · Jan 27, 2023

Mostly black to clear, only a few spots of white which I brushed off. I also brushed the spots where it formed beads and dried to what looked like a
paint run.

Dave G9N · Feb 13, 2023

(quoted from post at 16:36:27 01/20/23) My first time using it on some small parts. It seems to leave a coating after it dries. Should that be wire brushed or just primed right over it?

he residue is iron phosphate. It is a good paint base and provides some protection between cleaning and priming. It also holds oil on surfaces you can't paint like a table saw.

Ospho question

Mike(NEOhio)

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WESnIL

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showcrop

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Mike(NEOhio)

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Dave G9N

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