Password protected sketchbook
thingiverse
Contains the vector art for laser cuting the wheels i used for my password protected sketchbook :https://www.youtube.com/watch?v=lZNVEd8PPSQ Instructable page :http://www.instructables.com/id/Password-protected-sketchbook/ Feel free to use them as is or to enhance them as you wish :) If you want to do the same but with different codes, think about updating the engraving on the top holder ! Squares tell the knocking rythm and roman numerals tell the notes to play on the piano.
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