Over All Rating Reviews : These are great quality smaller stamps to use to personalize jewelry. I've used them with 24 gauge sterling and 18 gauge copper. If you're looking for an inexpensive way to get started with word and name jewelry, this set is great. I do recommend practicing on copper to figure out how hard you need to strike the punches for a good outline. If you strike too hard, you can easily warp metal but not hard enough and you don't get a clear imprint.
These are hardened steel and while a small jewelry type hammer is handy, if you work lightly you can start working with this set with a regular household hammer. A small tack hammer works very well and it doesn't matter as much if you mar the surface of the hammer.
The impressed letters look better darkened with liver of sulphur or you can even put the finished piece in a bag with a boiled egg to darken the the metal. Polish the dark off the flat spots leaving the imprinted letters dark.
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27 Piece Alphabet Letters A-Z Punch Set For Stamping Metal 1/8 Inch 3mm (1 Set).