Clock Puzzle

prusaprinters

IntroductionI enjoy making ‘escape room’ type puzzles for our Scout troop and I was messing around with the idea of having a physical puzzle where if you set a certain time of day the puzzle unlocks and this is what I came up with.Build instructionsPrint one of each part. You might find that you have a better result printing the dials at a 45 incline from the plate to decrease supports and improve surface finish. (Screenie from PrusaSlicer in the pictures section shows what I mean in case you're confused)You will also need an M3 (3mm) grub screw or you can fashion one using an M3 screw: Cut off the screw head and cut a slot so that a flat screwdriver can turn it in. I'd imagine that a similar sized non metric screw would also work..Refer to the diagram pictures..Put the 3 dials inside the Clock face. They should fit inside each other and be able to move independently. The ‘cog-like’  shapes should also protrude through the clock face.Align the slots on the dials so that they all line up with the 9 on the clock.Place the Second hand, then the Minute hand, then Hour hands in place on the cogs at the required ‘unlock time’. Anchor the Hour hand in place using a 3mm grub screw which should lock the entire arrangement together.Now when you put the base in place with the large hole lined up with the hole at the 9 you should be able to insert the ‘key’ and scramble the time to lock the container.DisclaimerThis is not very secure and is possible to crack once the mechanism is understood. It is also very much a ‘first version’, so while it works OK there are lots of potential improvements that can be made to it. Remixes encouraged!