Drill a 1-inch hole in the center of the 4-by-4-inch block.
Drive the wood screw through the opposite side of the wood block until the tip is exposed halfway into the hole's opening.
Clamp the block into the bench vise. If you have a workbench, bolt or screw the vise to the bench to further secure it.
Slide the insulated wire into one end of the hole. Adjust the screw's penetration into the drilled opening so that the tip strips the outer insulation of the wire.
Pull the wire though the hole in the block. Peel away the outer insulation from the wire.