Q: Who is behind Little Planet Factory?
Little Planet Factory is currently actually an one-man band / startup by George Ioannidis. Someone who grew up watching Cosmos, reading Douglas Adams and happened to have a wide experience in 3d printing.
You can see where this is going can't you?
One day he searched for a Mars globe and after failing to find one to his liking decided to start making his own. And then was asked to make another one. And another one. And so on.
Find him @kupeplex
Q: How large can a globe be?
200mm / 7.8"
This is the maximum size of one piece seamless globes. Larger globes and terrains are possible as special orders but will need to be assembled out of multiple pieces. They are also significantly more expensive due to the additional structural thickening required to ensure the integrity of the walls.
Q: How small can a globe be?
10mm / 0.4"
With optionally smaller objects if they are part of a multi-part model that requires them for scale purposes. Keep in mind that the smaller these objects become the more detail is lost.
Q: Why are the large globes so expensive?
Unfortunately it can't be helped! The outer surface of these globes requires making use of a proprietary 3d printer ink. This means that every time the radius increases, consumption increases by a close to 4πr^2 relationship, r being the radius.