4 ms·That's amazing, I didn't know that was even possible. 1.6cm is huge!by relix 16y agoThat's amazing, I didn't know that was even possible. 1.6cm is huge!Vivtek 16y agoDepends on the age. Very young children can regenerate fingertips. That's about it, though.bobds 16y agoI was about 10 years old, if I remember it right. Also note that the door completely missed the bone, although I remember being able to see a small part of it.