How to use a nibbler to make door and window openings By Jenny Freeland | May 20, 2011 | Last updated on November 7, 2022 Email Newsletter Get the newest photos, videos, stories, and more from Trains.com brands. Sign-up for email today! Get Updates Having trouble viewing this video? Please visit our Video FAQ page Model Railroader associate editor Cody Grivno shows how to use a nibbler to make door and window openings.