Should print easily without supports, based on what I know so far. If the model is too small, you can resize it to whatever size that you like. 

                                                        Build Instructions

Take the pieces off of the print bed after printing is complete, and slide one spike in to the corresponding hole. Slide the spike in (Do not force it. This could lead to damage of the model.

Notice: If your printer quality is low, or the model is too small, the spikes will not fit in the holes properly. To fix this, all you have to do is trim about a millimetre off of the tip of the spike.