Here is another versatile robotic arm that you can use for 3D printing, laser engraving, and other tasks. The Hitbot Z-Arm has a parallel axis joint layout and can be taught new moves without extensive background in programming.
The Z-Arm has a driver and motion controller with an app for easy programming. You can also manually move the arm to create repeatable motions. The robot can solder, play games, pick & place items, decorate cakes, and a whole lot more. It can also grasp and move fragile items.