Stamping letters into metal is a craft generally used in jewellery making. The concept of the craft is not difficult, but it takes some practice to become proficient. You can stamp letters on the back or inside of metal jewellery to write a message, or imprint information about the quality of the metal. Letters may also be part of the jewellery design.
Gather or purchase your supplies. You will need a stamping letter set, a bench block, practice sheet metal and a 454gr (or heavier) hammer. You may also want to buy some metal blanks. These are preformed metal jewellery pieces ready for stamping.
Place a small piece of scrap sheet metal onto your bench block. The bench block is used so you will not mark up your work area. It will give you an even, hard surface to stamp on. Choose one of the letter stamps to practice with.
Place your fingers into the stamp's side grooves to keep the letter in position. Hold the hammer midway up the shaft, rather than towards the end, as you would when nailing. Place the stamp on the scrap metal and give it a good whack, not too hard and not too soft. It will take practice to know exactly how hard to hit the stamp. Check the indentation on the metal. Practice until you achieve the appropriate depth.
Practice spacing the letters. This is a matter of preference, but generally you don't want the letters spaced so far apart that it no longer looks like a word. Practice stamping letters next to each other until you get the feel for the spacing you like.
Use a metal jewellery blank to make your first metal-stamping project. Start with a self-made pattern. Trace around the metal blank onto a piece of paper and then write a word within the traced shape. Find the centre of the word and the centre of the metal blank. Instead of stamping from left to right, begin at the centre. Stamp the letters from centre to right, and then centre to left.
Design stamps are used in the same way as letter stamps.