Design your own etched glassware and mirrors with Armour Over N Over Glass Etching Stencils. These reusable, self-stick stencils work with Armour Etch Glass Etching Cream on flat or rounded non-porous surfaces. They come in a wide variety of motifs that can be mixed and matched, plus blank stencils for creating your own designs. - Armour Over N Over Glass Etching Stencil - Alphabet Upper Case.