For selecting the size of your print the calculator says:
Quote
Size of the average layer cross section.
Micro = Less than 0.5cm x 0.5cm = 0.25cm^2
Tiny = Less than 1cm x 1cm = 1cm^2
Small = Less than 2.5cm x 2.5cm = 6.25cm^2
Medium = Less than 3.5cm x 3.5cm = 12.25cm^2
Large = Less than 5cm x 5cm = 25cm^2
Extra Large = Greater than 5cm x 5cm
For hollow or thin wall objects use a smaller size
The ambiguous bit in my mind is "average layer cross section". For example if I'm printing a plate with several independent objects on it should I be using the average cross section of the individual objects or the cross section of the entire plate? The same sort of thing would apply for printing a large object that when sliced would really be made up of many smaller islands. My hunch is that it's the individual bits and not the entire contents of the plate, but I thought I'd ask.
Robert