Smart Card Cutting Jig / Sim Card Mini

I needed a tool to help me cut down full size smart cards to “sim card mini” size so that I could use sim card (mini) holders on my electronics design instead of having to use full size smart card holders (which would have made the PCB super big and expensive). Usually for a smart card, the entire chip is located underneath the contacts.

In this design you'll find a two-part tool to aid with this task. How to use this:

• Drop the smart card into the lower shell, then place the upper shell on top
• Score the smart card along the guide lines
• You can remove the smart card now. Using scissors, you can remove the bulk of the card
• Now, by bending the card along the scored lines, you can either break the excess parts, or continue cutting.
• Done :)

I also included the openscad file so that you can adapt to your needs. You might need to adapt the clearance depending on how precise your printer prints. The sum of both clearances does NOT have to happen to come out at zero, that's just a coincidence in my case. I adapted the clearance of the “anvil” so that a smart card would fit perfectly, then I adapted the clearance of the stamp until that fits, it took me a couple of attempts/prints, of course.