Figure 2: The orientator method to generate IUR sections. (Left): Each cylindrical block was placed on a circle, which was divided into 10 equal distances, a random number between zero and nine was selected and the block was sectioned with a blade in that direction (here 8). (Centre): The sectioned surface of the block was placed on the 0-0 direction again and the next cut was done by selecting another random number (here 1).