painting rusty metal

[gokart14]

here is my problem i have tried and tried to paint some parts to my go kart yet the rustoleum wont work...... i sand the metal down till its shiny i then hit it with two coats of rustoleum primer than let that dry than two coats of black and after that dries it scratches right off. even after like a week if drying i can scratch it off with my fingernail.... also the primer doesnt scratch of jus the black paint..

i mean it is humid but not eought to effect the spray paint

this video sums up my problem any help would be greatly appriciated

link:
http://s1084.photobucket.com/albums/...rent=paint.mp4

i am really mad about this because i have been trying for so long to get this to work thx....

 

[oldognewtrick]

How lond are you waiting after you prime to top coat and then apply your second coat? Pay close attention to the directions on the can.

 

[gokart14]

i have tried multiple things like priming then wating like 5 min. then priming. i have also primed than wated like 1 hour and re primed it. then for the paint i have let the primer dry for two days before painting it with the black. then i have also tried painting like 10 min. after primer. so i have tried the can derections nothing works...

next option is clear coat or differnt type of metal thx guys

 

[oldognewtrick]

Just a couple thoughts, did you sand in between primmer and top coat? Sounds like an adhesion problem you are having. Did you degrease the metal with mineral spirits before you started painting?

Oh...and we want to see the cart and some spec's.

 

[gokart14]

alright well i havent been sanding in beteen the two coats of primer. I might try that. also could you throw up a link for mineral spirits? many have said i should use this. Thx

The kart i am building started as a dirt devil kart, but i have changed it and just been designing it myself. i had the kart running and driving, but took apart to put roll cage and paint(here i am). its full suspension with two a arms up front and one a arm in back. its almost been a year. here are some pics Thx again

 

[chaluska]

what type of metal did you make the frame out of? I can remember having difficulties painting galvanized steel before. the galvanization coating made it difficult for the paint to adhere smoothly.

 

[911handyman]

You need to use a better primer and paint go to the automobile paint store. What is happening is the impurities in the or on the metal are affecting the primer.
Great primer and great paint= Success

 

[gokart14]

would truck bedliner work? thx

 

[911handyman]

Yes that will also work, if you have a siphon spray gun with compressor
Home depot has rustoleum in a quart size just thin it with laquer thinner just enough to spray it. This is an single stage paint for better than the spray can. Be sure to primer it first. If you have some cash powder coat is the best way

 

[gokart14]

so what do you guys suggest last week i painted the frame with rustoleum rust reformer. then i painted it with rustoleum gloss black protective enamel. then after that i put a gloss cover over it. well its been a week and when i take my fingernail and run it along the metal it chips off. so what do you guys suggest i do? i have spent like 30 bucks on all the paint and it doesnt work at all. i have tried variation of evry variable possible nothing works.

i want to try something else, but two problems out of money and i have a painted frame that will chip off a soon as i start driving. i am so pisssssed of

 

[oldognewtrick]

Yes that will also work, if you have a siphon spray gun with compressor
Home depot has rustoleum in a quart size just thin it with lacquer thinner just enough to spray it. This is an single stage paint for better than the spray can. Be sure to primer it first. If you have some cash powder coat is the best way

I don't think Rustoleum is a lacquer based paint, I thought you thinned Rustoleum with mineral spirits?