Printing orientations should be obvious and those that are not are optional. The longer parts (stand and bracket) are best printed upwards but the bracket may prove stronger if printed flat. My attempts at this resulted in serious warping. As mentioned, a 1" self tapping screw is required to assemble the optional cable tidy. A STL showing the full part is included for reference. Depending on the accuracy of the printer being used, it may also be helpful to file the screw. My Robox managed without problems so test and see if there is a need. A small scaling adjustment will also fix this problem (no less than 0.95). Assembly is straightforward - mount the bracket on the wall, slide the stand over it and secure with either the cable tidy or screw. Reverse this process to remove.