The slider blocks with their corresponding panel labelled.
The last step to building the axes was to actually place the rods in and connect the motors and axes using belts as pictured on the right. This was challenging in the next step because the slider blocks were upside down and couldn't hold the printer head effectively.
Building the axes started out with assembling the slider blocks pictured to the left. These are placed on the axes and slide back and forth to hold and guide the printer head. The claw on the slider is pressed on a belt that moves with the motors. The axes bar goes through the hole in the middle of each slider block.
The back right corner after putting the axes in and attaching the belts.