Blasting question

[speedy70]

Hi,I was wondering if it is necessary to use a rust treatment like ospho or rust prep after blasting rusted areas on your car? I plan on epoxying afterwards. I have a 69 dart that had a vinyl top on it that was removed and left to rust,it's just surface rust and should blast pretty clean. Thanks

 

[jefflock]

I don't know if it's necessary but why take the chance.

 

[bighammer]

Do it. There is microscopic rust particles left, even after a thorough sand blasting.

 

[cjh]

Do it. There is microscopic rust particles left, even after a thorough sand blasting.

Yep.....^^^^^^^^^^^^^^...what he said.

 

[carcrazyken]

I have done it both ways and you can get rust popping back through paint if you dont treat. Be especially thorough around seams

 

[Dartnut]

Please don't tell me that you are going to sand blast the roof of your car, it will warp the crap out of it even if you do it lightly!

 

[Rice Nuker]

Blast the perimeter roof line about 2 or 3 inches, use DA on majority of panel itself.

Southernpolyurethanes has a self etching epoxy which I think is great. From what I remeber they say: bare metal, degrease / clean and then spray the epoxy.

 

[speedy70]

Thanks for all the advice, will definitely treat it and use the DA on the roof panel.