Por-15 or Rust bullet

[frogman68]

PLease forgive my ignorance, I watched the gas tank refurb video series in this thread, and I see most of you guys use this to simply stop MORE rust from occuring?
WHne you do apply it to something, say your frame rails under the bed, do you go over the rusted stuff with a grinder first, then start with the etching chemicals, then the prep THEN the paint finally?  Is the end product the same "looking" finish as powdercoating?

does the grinder/wire brush, etc have to be done before doing this? the reason I ask is that my truck has like, 1% rust on it somehow, but could I still benefit if I used the etcher and the por15/ or chassis saver etc.
what shouldn't it be used on?

I am no expert but with Chassis Saver I just hit the loose stuff with a wire wheel on my grinder and go right over the rust so far what I have painted (with a brush) has not come off

[Blazin]

It also sticks well to sand blasted metal. I use a needle scaler to pop off loose rust, and scale. Also pressure wash with heated water before, and after.

[frogman68]

Here is some Chassis Saver brushed on

I tell my wife not to go to church then she wonders why car parts get painted in the kitchen

[69byrd]

I used the POR-15 and have been very pleased. I took mine down to bare metal then I had to use the metal etch. Next time I think I'll knock off the scaly rust and paint away.

[Captkaos]

I have used both POR 15 and chassis Saver with good luck on both.

[VileZambonie]

If it already looks pretty good then just clean off all the loose crap and paint over it.