Here is an example of a technically challenging situation.
On the before picture you can see 2 whorls, one going clockwise the other one counter clockwise. Dr. De Reys reconstructed these whorls using 2800 FUE grafts (2 consecutive days), using an 0,8 mm instrument. We averaged 2,7 hairs per graft, very very high number.
If I am not mistaken this has not been presented before using FUE only.