I've done lots and lots of techniques over the years and not too long ago I 'arrived' at metal work. I realized I wanted to utilize rivets, and in all sizes but how to make the holes was beyond me. Untill I read a review from an experienced beader/crafter who wrote this was the best punch she had found. So I bought one. She was SO right. It'll make holes in everything, it's a little tricky to learn how to get the hole in the right place when pieces are not flat but rounded or ribbed, but practice makes perfect :D and this tool will NOT let you down, EVER. I have not tried this - I have had no need to thusfar - but I read it will punch holes even in coins and I believe it. It seems indestructable, heavy, solid, I LOVE it.