Review (5/5): My go-to stampers
These are the stamping plates that I use all the time. I stamp over gel nail polish with konad stamping polish, Essie polish, or Sallie Hanson insta-dri polish. When you first pull off the blue protective film, clean the plates really well with acetone. Then, I usually paint, scrape, roll, and then clean everything off without actually rolling the first stamping on my nails. I find the first stamping doesn't go well on a fresh plate, so I just don't waste my time.
After doing that, they stamp fine all the time. I have found at least one image in every stamper bundle that has stamping issues. I just don't use that stamp. These plates have intricate designs that transfer well. If you find that not all of your design is trasferring, first clean the plate really well with acetone. All that built-up dried polish affects the stamp. There are lots of good videos on stamping troubleshooting, too, if you are having trouble.
I stamp with a konad stamper, and scrape with an old credit card or empty gift cards. Metal scrapers will damage the plates.