The Mark One requires a minimum solid area of 1 square inch to place fiber. The area has to be continous (in most cases holes are not allowed to place fiber). Note as well the fiber is a continous strand for each layer (no fiber cuttings are allowed at one layer). This is limiting for many more complex geometries. Also there is a minimum width required to place at least one fiber ring, from my estimation it requires at least a 3mm thick wall. You have to take all that in consideration for designing your part.

I still belive it is a great innovative product that will be improved in the close future by the research team. I have to say they have been very responsive to my support requests. My problems were solved in around 24 to 48 hs.

Good luck!