Edit July 17 2023: Added symbols $ % # € ! ? &
Edit August 6 2023: Added special characters like Ü Ö É Ç Å
At 100%, the letters are roughly 13mm tall (or about ½ inch). I tried scaling down to 65% (8mm letters) and that still worked. Try decreasing horizontal expansion to -0.05 or -0.1 if the hinge doesn't work smoothly at smaller scales.
note: to write HELLO, you only need to print one ‘L’ =)
Using a hairdryer, hot water or a heat gun carefully heat up the hinge. As soon as the hinge starts to become malleable, quickly fold the punch in place and let it cool down.
Originally created these symbol variants for a little Adventure Race (AR) my friend set up for his colleagues. The aim is to orienteer to the checkpoints (CP's) and find these ‘punches’ marked by a little flag. You punch the unique design in your ‘passport’ (a card to keep track of your aquired checkpoints).
In this case it's not a punch but an embosser. I altered the design to have a typefont instead of symbols.