This week I made a fan for unfolding my business card. The inspiration comes from an old Chinese saying that the heaven is round and the ground is square. So I fold the card into a square shape, and by using the motor it would gradually open up and turn to a circle card.
I designed two versions of business cards using laser cutting and etching.
To mount the DC motor and fit it well into the bamboo box, I made a wooden motor holder by drilling a big hole in the center, and tow small holes for wires to stretch out. After that, I used some foam board to fix the positions of components in the box, so that the motor would remain stable once it is spinning.
Then I laser cut a black card board to work as the cover of the box, and attached a gear on top of the motor, and glued my card to the gear.
Finally, the fan of the business card is made like this: