Mysterious Mind Reader Cards

thingiverse

Want to Baffle Your Friends with Your Mind-Reading Ability? This Will Do It! Simply ask a friend to choose a number, but not to reveal it to you. Then have them scan each card and turn over any that don't contain the number they're thinking of. Within seconds, you'll be able to announce the chosen number! The Secret Is Simple: The top-left numbers on all selected cards must be added together. Printing the Cards: A filament change should be done at 1.8mm + one layer. You can do this with the "Change Filament At Z Cura Plugin" found at https://www.thingiverse.com/thing:2077884. I printed with Layer height: 0.15 The box must be printed in vase (spiral) mode, with a top layer of 0 and a bottom thickness of 0.65 (1x 0.2 + 3x 0.15 - it should only vary slightly). Nozzle and line width are 0.4, with a layer height of 0.15.