Applying more force to the screw

To increase the force when loosening the screws, you can drill a hole in a large steel and wooden screwdriver to swallow a pin or a thick nail. This way we will obtain a knob, and therefore the ability to unscrew with greater force. The hole for the knob should be drilled as low as possible on the handle in the wooden part. A pin with a diameter is used as the knob 4-5 mm.