Build Plate Cube compatible with Plus Plus

Enables 3 dimensional play with plus plus toys. Tolerances used in this worked perfectly for Hatchbox PLA filament on a Prusa MK3S printer using default settings included with Prusa slicer for hatchbox PLA. No infill required. No supports required, model has included supports for top of box. Other filaments will require different tolerances and may not work with this model.