Lego safe with combination lock. The mechanism is built inside the door and the mechanism has 2 rotors with 2 unsymmetrically sliding bolts. The door is still very thin (and this is the whole idea). This is my first attemp (with combination locks) so (hopefully) the next project will be a saftey door with 3 rotors built inside... Please remember to rate / comment / subscribe ! Have FUN Creating with LEGO!