This is one of the easiest CNC develops we’ve seen however it still functions rather well. It’s a clone of the EggBot, however is aimed at printing on spherical Ping Pong spheres rather than elongate eggs. [Chad] phone calls it the Spherebot, however you should be cautious not to confuse it with the morphing ball robot which can walk around like a hexapod.
The job is both mechanically as well as digitally simple. The body of the printer is made up of three acrylic plates, which we’re sure were clamped together when drilling holes to assurance appropriate alignment. Threaded rod as well as nuts are utilized to install the plates to one another, in addition to to hold the ball in location while printing. One stepper motor turns the sphere while the other pivots the pen mount. A servo motor is accountable for lifting the pen. The entire thing is driven by an Arduino together with two stepper motor driver boards. Don’t miss [Chad’s] presentation embedded after the break.
[via Reddit]