I have some rust on my A frame that i am currently sanding down but it has some craders or whatever like little divots in which i cant get down far enough without going through the metal. Any suggestions that anyone has used that works good??? Thanks

 

someone help this guy out i forgot what the stuff is called

 

there is someting called pb blaster stuff eat up rust real good. mechanics at my work use it all the time.

 

http://www.autobodystore.com...check them out.