I bought this wrought iron looking patio table set at garage sale. The paint started to chip and now it looks like two layers of paint and then white primer over a ceramic or porcelain or enamel in a cream color on this heavy metal patio table and chairs. I have tried to google this but nothing pulls up. How to remove the paint and primer without damaging the ceramic layer? The table has the diamond pattern with the wholes on top so lots of crevices to deal with. The pattern on the chairs are oak leaves on the back and and arm rests. Has anyone heard of wrought iron patio sets with ceramic coating and what is the best way to restore it?