ConfusedBoners : How A Calligraphy Pen Works. (X-Post /R/Damnthatsinteresting)
How a calligraphy pen works. (X-post /r/Damnthatsinteresting)
Link
original: https://reddit.com/r/ConfusedBoners/comments/4au7i1/how_a_calligraphy_pen_works_xpost/