This is the second installment of my series on building Rick and Karen Pollack’s MakerGear Mosaic 3D printer. This part covers assembly of the robot’s first of three Cartesian axes.

One of the nice features of the Mosaic kit is that several of the more complex subassemblies are supplied pre-built, greatly simplifying construction. This stage of the build consists essentially of decorating the ready-made Y-axis motor mount with a few components—chiefly the Y-axis linear rail, stepper motor, and timing belt.

Building the MakergGear Mosaic 3D Printer – Part I: The Frame