>>116624081) carefully cut the skin from the scalp in a large ring and peel toward the crown so that a 1 inch region of bone is visible
2) use a bone saw and cut the region of exposed bone down the center
3) remove bone cap with scalp attached.
4) wash newly exposed brain in soapy water between 30 and 36 C.
5) return the cut section of bone and use peeled skin to cover the gaps made by the bonesaw.
6) wear a helmet snugged down tightly on the head to protect the bone as it heals.