Need to do a re-paint

My question is, can I rough sand this tractor and apply crack filler primer until I have filled all the pits, fine sand it and then re-paint it and end up with a superior paint job. I have never done one in this manner before and I don't know if it will be acceptable or not. You painting experts let me know if this will work or be a disaster.

Thanks,

BUT, the primary concern is the rust showing underneath and coming through the paint.

That rust must be dealt with if you want to do it right.

My advice....and you know it as well as anyone else is to strip off the old paint, neutralize the rust after with zinc phosphate after, wire brushing or sandblasting, prime it correctly and paint it with a top notch enamel.

Rust never sleeps even under a blanket of fresh primer and paint.

I went through the same thing recently on a Farmall A. The young man had great intentions and for his experience level did as good as he could do when he said it was restored. But, the paint was a spray on rattle can job and the rust wasn't dealt with and the underside wasn't completed so...I stripped it and re-did the whole thing.

Oh well. So it goes in this tracotr hobby business. If you want it done right, ya got to do it yourself to your standards. good luck.

BUT, the primary concern is the rust showing underneath and coming through the paint.

That rust must be dealt with if you want to do it right.

My advice....and you know it as well as anyone else is to strip off the old paint, neutralize the rust after with zinc phosphate after, wire brushing or sandblasting, prime it correctly and paint it with a top notch enamel.

Rust never sleeps even under a blanket of fresh primer and paint.

I went through the same thing recently on a Farmall A. The young man had great intentions and for his experience level did as good as he could do when he said it was restored. But, the paint was a spray on rattle can job and the rust wasn't dealt with and the underside wasn't completed so...I stripped it and re-did the whole thing.

Oh well. So it goes in this tracotr hobby business. If you want it done right, ya got to do it yourself to your standards. good luck.

If the present paint is activated acylic enamel or single stage urethane, then you should be fine with a another paint job on top. However, synthetic enamel will not lend itself to putting a different type of paint over the top. Hardeners have a tendancey to lift under coats.

If the surface of the metal was cleaned with a wire brush to remove the rust, sandblasted or electricaly de-rusted, then the top coats should be tight enough to help resist solvents and hardeners. If there is still rust in the pits, then you are going to have trouble later on down the road.

From the way you describe the sheet meatl I am doubting the previous painter took much pains to get a correctly prepaired surface.

You could try your approach and see what happens. The worst thing that could happen is that you get to remove your paint as well as the previous paint.

Before doing anything I would take a razor blade and shave off the paint in an inconspicuos place to see what is under it. If all looks good then chances are it is good. If you see no self-etching primer with primer filler over that, then you might as well count on stripping it all.