DIY 3D Printed Combination Padlock Kit — Choose Your Code

DIY combination padlock kit: snap 30 parts off one 3D printed card and build a working 3-dial lock with your own code. No 3D printer needed — it arrives already printed as a snap-apart kit card, ready to build. How it works: pick any 3-digit code using the numbers 1–9. The kit comes with 27 number dials (three of every digit), so repeats like 7-7-7 work too. Choose your three dials, thread them onto the shackle in your code's order and close the case — the lock opens when your numbers line up at the seam. Build time is about five minutes. The dials turn smoothly under your thumb and stay exactly where you leave them — no clicks, no drifting off your number. Good for: • DIY escape rooms and escape room games at home • Classroom breakout boxes and STEM lessons on how a combination lock works • Scavenger hunts, treasure boxes and puzzle gift boxes • Anyone who likes building things that actually work Details: • 30 pieces on one snap-apart kit card: 27 number dials, shackle, front and back • About 3.7 in (95 mm) tall assembled • Printed in gray PLA • Glue is optional — a drop makes your code permanent • Illustrated instructions: https://drive.google.com/file/d/1dzME0An87VF7HrYVs8sT8YawgN6gVRD0/view?usp=share_link Please note: it's plastic — a fun, working lock for games and gifts, not real security. Don't use it to lock up valuables. Small parts, not for children under 3. Designed by MakerMike.