18-gauge is typically a pretty thick gauge for metal stamping, but 18-gauge Soft Strike Alkeme metal stamping blanks by ImpressArt make 18-gauge blanks the DIY metal stamper's best friend! A great alternative to sterling silver, Alkeme blanks are made in the USA from a specially formulated, non-corrosive metal alloy that's lead free, nickel free, and cadmium free. The resulting thick yet soft metal allows even intricate and delicate stamping designs to make complete impressions and look great.
18ga copper and 17ga brass are excellent for etching with ferric chloride. You can even etch both sides without worrying about turning your piece into lace!
18ga and 17ga copper, brass and sterling silver are a little tough to stamp (they require more muscle than stamping thinner gauges), but if you want to stamp both sides of an item, these gauges is excellent for preventing show-through.