My contest design

This is my project for the student challenge. I made this because I have had many issues of my parents walking in on my school classes and making me lose my focus. I made this to let them know that I'm in class and to not bug me during that time. some issues I faced along the way was having the two sides separate. This made the design less stable. If I could redesign this, I would make it a little smaller. I think 3D printing makes this sign more customizable. For example, if i want to make the sign in another language, I could. It is also safer to get than a normal sign during COVID-19.