If you go the blaster route make sure he knows about cast iron (most do) if he treats them like steel he can ruin them! The 'coke trick' converts red-lbrown iron(III) oxide, Fe2O3 (rust) to black ferric phosphate, FePO4. it looks like cast iron but can be removed by scrubing. Better and faster is NAVAL JELLY which is stronger in acid and has a thickener that allows it to be applied to sloping, vertical, or even overhead surfaces. IMHO this works better for surfaces that are to be painted the ferric phosphate takes paint very well.hqueen13 said:I swear I have to get the two cast iron frying pans that we found fixed up. They're rusty I need to try the coke trick that someone suggested, and if that doesn't work I suppose I'll find a sand blaster and have them blasted. I really need to do it cause I really wanna cook on cast iron! I feel so left out!
If you have 'good stuff' restore it the way collectors do [i have lost my lincs try a search under "castiron cookware collectors" ~gd