High quality finish, but some risk of destruction

Nevertheless, be treated with caution. I've got a five-year-old mini-SIM, I cut three years ago to a micro-SIM, thus turned into a nano-SIM.

It is also a piece of metal had to be stamped out area. The metal was easily bent at the edges. The plastic edges also have a lot of remains, which have to be removed with the supplied file itself.

For me, the SIM no longer went after first time. With a little hang around and folding it was then luckily still. Probably had bent slightly by the stamping and a contact was loose or something was shorted.

It would be better if a back pressure would also be down there (then nothing can bend) and the edges of the punch would also sharper, so do not stay much remains. The SIM card also sits not absolutely perfect, but can perhaps be pushed around half a millimeter. That will not usually be relevant to's result, but falls on. In the bays of the Card Phones sits indeed completely free shift, which should be even more so with such a punch.

In retrospect, I would do more with a sharp craft knife or a sharp, small pair of scissors and a nano-Card Template as likely not easily bend a bit like with the punch.