How to Make Safe with Combination Lock from Cardboard For this project you need cardboard, glue gun and few wooden sticks. That's all! Follow instruction in this video if you want to repeat or just watch and enjoy :) If you like this video do not forget :) Music: "Gonna Start (Version 2)" Kevin MacLeod. Creative Commons Attribution (https://creativecommons.org/licenses/by/4.0/). http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1400002. http://incompetech.com/