need advice on painting tool box w/ rust

[Goohead]

so i have an older powder coated tool box i decided to restore due to some of the powder coating peeling off on the bottom of the box and of course rust buildup. i dont know the best way i should go about to paint this with some 2k urethane, some ideas i had was:

1) naval jelly the rusty parts after wire wheel clean up, then hit the bare metal part with some por15, then paint on top of it

2) buy a harbor frieght portable sand blaster, blast the whole thing, naval jelly the whole thing then por15 then paint (expensive)

3) buy harbor frieght portable sand blaster, blast just rusty part, etc etc

any advise anyone can give me? i want to make sure i dont deal with rust problems in the future, but dont know if i can safely paint over the existing powder coat without issues in the future?

picture for reference

 

[plinker]

If you blast it, you wont need the navel jelly or wire wheel, just blow the dust off. For the size, a Speed blaster does a nice job on smaller stuff.

For touch up, I'm not sure how powder coat react's to paint, but I would get some epoxy paint and use that first and then find a match for the color.

 

[Al Bundy]

Blast it clean, prime with a self etching primer and spray it.

 

[countryroad82]

They claim you can paint over powdercoating, I have never done it myself so I don't have any first hand experience. If the rest of the coating is in good shape, I would try a small section to see how well it reacted to being scuffed and painted. As stated before after sandblasting, you don't need to do anything else to the metal other than give it a coating.

 

[madmikeee]

take all trim off and tools out
Sand, sand sand
Take to your local reputable bedliner sprayer and have it sprayed (They have colors now you know)

Done and no more issues with rust

 

[jabberwoki]

Sand of the rusted area and get the paint matched prime with dp 40 then paint away. This would be the easiest option doing an entire box is a lot of work i suppose it depends on how deep you want to get.

 

[B17E1943]

Blast, epoxy primer and paint. Forget the POR 15 ****.