I was very interested to read this review. I spent the time last year to use one of these products(I don't recall which one!), using a metal punch, and it was a tedious process. I even managed to screw up one plate. Shortly after I was done I realized that the ink had begun to wear off the metal, and I could no longer clearly read the letters. I assumed this product would last long after I was gone, but that wasn't the case. Now I'm hunting around for a replacement product.