You can also use the underside of the plate to hang some components...as my Green and Blue Laser driver are secured on the underside of my upper level. Watch out for interference when making use of this space. Two " things" cannot be in the same space...at the same time. Another item....watch where you locate your Scanner head. Keep the Scanner head as close to the level outer perimeter as possible. The further towards the level interior you go...the higher the possibillity of the beam projections not clearing the plate level edge. Also, with extra wide angle scanners, such as the DT-40W... watch that the Scanner head projection will clear the SS post used to connect the levels...too far towards the perimiter...and your beam path could be obsecured.