A two-part structural adhesive composition comprising a curable epoxy resin, an amine curing agent, a toughening agent, and a reactive liquid modifier. Within this method, the following steps are carried out: a) dissolving hydroxyethyl starch in water, b) adjusting the pH value to a value of 8. There are provided a trial-class band capacity not to discard packets of the trial class and a priority-class band capacity not to discard packets of the priority class. The surgery is completed manually after the guide is attached to the bone, and the robot is not used after the guide is attached to the bone. A low voltage electrical source remote from the robot arm assembly powers the voltage multiplier and the transceiver, both housed adjacent the atomizer, via two shielded, low-voltage, electrical cables extending from the low voltage source to the housing. Also, the cone hairbrush allows for a root lifter to achieve more body to the overall look of the hair by applying the smallest end of the cone brushhead invention to the scalp while lifting and blow drying the hair simultaneously.