I have a 3 year old son who is getting into just about everything now-a-days. What would you guys suggest as far as safeguarding my printer from him? It's in a room that he is in quite a bit, and I'm afraid that he will either 1) hurt himself or 2) hurt my printer. Have any of you guys had a kid in your house while your 3D printer was there? I'm also concerned about what to do when I print stuff. I've been shutting the door, but I don't like doing that.