Combination Padlock v2

thingiverse

This is a working combination padlock design that can be used in place of a standard Master Lock on a locker or whatever. It's relatively strong, but it is plastic it's, so not for high security.UPDATE 8/22/2024:Fixed the body models adding more clearance around the detents and springs. Use Body_FIXED.STL. This should resolve the printing issues many people are having.Added an option to print the springs separately if you prefer. The springs work quite well this way and should be easier to print successfully. Use Body_noSprings.STL and Spring.STL. Updated instructions are below.Features:Configurable combination: up to 10,000 possible combinationsSelectable security options: 3 or 4 tumblers with 6 or 10 digit numbersSpring loaded detent feature on tumblers for precise positioning and satisfyingly tactile feedbackSimilar dimensions to classic rotary Master Lock for compatibility with most lockers and other latchesStrong lock body and shackle that resists forcing openNormal or long shackle options for securing larger latchesSolidWorks files for your own customizationv2 Improvements:Print-in-place springs for detent works far better than old design which would break after a whileOption for 3 or 4 tumbler lock and 6 or 10 digit tumblersThreaded cap eliminates glue and allows for easier changing of combination.Taller wall next to shackle latch better resists forcing open of the lockFlipped tumbler position for easier right-handed operationTumblers can now be printed without supportsVarious changes to make printing easier and cleanerCombination mechanism inspired by thingiverse.com/thing:409462 by BLed.Files to PrintThe parts are all interchangeable for many different configurations. Here are some examples of STL files to select:Example 1: 3 tumbler lock with 6 digits and long shackle, combo 123PadlockV2_Body3x_FIXED.STLPadlockV2_Shackle3xLong.STLPadlockV2Tumbler6x1.STLPadlockV2Tumbler6x2.STLPadlockV2Tumbler6x3.STLPadlockV2_Cap.STLPadlockV2_Spacer.STLExample 2: 4 tumbler lock with 10 digits and short shackle, combo 1982, with springs printed separatelyPadlockV2_Body4x_NoSprings.STLPadlockV2_Springs.STL (print 4 of these)PadlockV2_Shackle4x.STLPadlockV2Tumbler10x1.STLPadlockV2Tumbler10x9.STLPadlockV2Tumbler10x8.STLPadlockV2Tumbler10x2.STLPadlockV2_Cap.STLPadlockV2_Spacer.STL