Could someone tell me the minimum operating dimensions for the BigBox? I am trying to figure out if it will fit in the limited space I have available, especially if I end up buying or making an enclosure for it. I found the unit footprint (550 x 490mm) but there are a few details I couldn't find out: 1) Does the footprint include the space needed for the reel on the back? 2) Does the reel have to be on the back or is the location flexible? 3) What is the operating height including the arch of the filament? Anything else I should be aware of when looking for an enclosure?