Moving positioner of the drill to a proper spot to assure the screw down to the right position.

Checking rev of the drill to assure it at 2000-2500/min.
Installing the selected fixer to the drill, then insert the screw to the fixer.
During installation, keep the drill and screw vertical to the surface of pressing model steel plate in order to create a central point.
Applying a power of 14kg to the drill, assure the applied power against the central point vertically.

Switching the drill on without stop in the middle way, discontinue the drill at once on the screw getting at the right position.