I used 1.5" size to acid etch wine glasses. Transfer tape a must. Only able to do 4 or 5 glasses with each stencil before starting to loose detail. But this is OK with me.
48 glasses to do. Have about half done. Look fantastic. Read Ted L. review below for detailed instructions. Only thing different is I do not salvage etching cream back to bottle. It is not expensive and I feel fresh gives a better look. Just my take on it. Oh, I also do not disturb the cream once on the glass and I use a popsicle stick to apply mine. Just placed an order for more to complete my project.