An old fave is back! Opaque metallic paint in a pen. Unique chiseled tip makes both thin and thick lines.
I've tested them and they are opaque and permanent on metal. Permanent on most non-porous surfaces (plastic, metal, glass, tinware, ceramic, mirrors, slate, tile...). Not suitable for children.
Imported from Japan.
Teri Calia made A Wizard's Potion Making Table (see the wide photo below). More info in the blog and/or see the supply list.