Locate the nail heads in the board to be removed.
Remove any putty or filler used to cover the nail heads, if applicable, using the tip of a straight pin or safety pin. Be careful not to damage the surrounding wood surface.
Position a nail punch over the nail head, hold the punch perpendicular to the wood's surface and strike the punch gently with a hammer to drive the nail downward.
Strike the punch until you push the nail completely through the wood piece into the support material. Remove the nail set from the hole by twisting it slightly from side to side.