stripping paint off grill

ok so I have a grill with old paint on it...along with my license plates I need to strip the paint off. I tried some industrial stripper on it and the grill and the plates still have some paint left... I did two sessions of stripper and it just didnt all some off. What can I use for the grill like scotchbrite? something that wont dammage the metal.. ?Maby something for the plates too..
I dont have a bead/sandblaster so maby sand them with light light paper?