StashCan 2.1 - 3D Printed Secret Safe with Programmable Lock
The StashCan is an imitation soda can with a programmable combination lock on the bottom of the can and a sequential puzzle lid which prevents unauthorized access to the can's contents. Super fun and super detailed. This new version 2.1 has updated files, instructions and support for AMS so that the combination on the bottom of the can is more visible. But it also prints well without an AMS.
It is 100% printable, and no hardware fasteners or adhesives required.
It is a fun, hide-in-plain-sight storage solution with added functionality thanks to the combination lock. While it is not entirely secure due to its portability and plastic material, it provides an enjoyable and challenging experience. It is going to likely be the most complex thing you have ever printed.
This is an advanced model with many details, so please refer to the documentation on my blog at https://www.logicalplanet.com/ and watch the accompanying video before attempting this print.
New and updated assembly and operating instructions are available here... https://www.logicalplanet.com/collections/stashcan2_buildguide/
Key Features Fully 3D printable — no additional hardware, fasteners, or adhesives required. Prints without external supports. Includes a sequential puzzle mechanism and a programmable 3-digit combination lock.
Overview The StashCan2.1 consists of three main assemblies:
Lid Assembly: Features a locking mechanism requiring a specific sequence to unlock.
Main Body Assembly: Connects the Lid Assembly at the top and the Lock Assembly at the bottom.
Lock Assembly: Secured to the Main Body Assembly and prevents unauthorized access unless unlocked using the combination code.
The lid’s puzzle mechanism adds an extra layer of complexity to opening the can, complementing the combination lock for a more engaging experience.
Printing Information
- Material: PLA or PETG
- Nozzle: 0.4mm
- Layer Height: 0.2mm
- Line Width: 0.4mm
- Wall Count: 4 (1.6mm)
- Top and Bottom Layer Count: 5
- Detect Thin Walls: ON
- Infill: 40% cubic
- Brim: No
- Supports: Integrated into the design where necessary.
- Print Orientation: As per the 3mf and stl files.
Assembly Notes Assembling the StashCan2 is intricate. Please follow the assembly instructions available at https://www.logicalplanet.com/collections/stashcan2_buildguide/
Related Links 3-digit Logical CardLock Case - The Programmable Gift Card Case with a Twist 4-digit Logical CardLock Case - The Programmable Cash Case with a Twist PuzzleLock Box — Lock and Puzzle in a Box BinaryBin – 16-Digit Binary Coded Lockable Container Programmable Combination Lock Gift Box Sequential Discovery Puzzle Gift Box #1 (GBS1)
Please join the LogicalPlanet Discord community via my linktree to discuss this and any other LogicalPlanet projects, upcoming projects, ideas and anything else related to LogicalPlanet.
https://www.logicalplanet.com/ email me at logicalplanet3d@gmail.com
Revisions and Updates I occasionally update and revise my designs. When I do, I’ll document the changes here. Check back periodically for the latest revision notes or if you’re experiencing any issues with a model.






































Thank you for posting the make. It looks great!!
Awesome. Thank you for the make notes. I love the can I that colour. And, sorry about that reverse thread in the can issue. I posted that one incorrectly and then noticed a few hours later. You and a few others downloaded it before I could correct it. But your solution was perfect - mirror the top! Nice work. and, thank you for posting the make.
Awesome. Thank you for posting the make! Looks good.
Than you for posting. Looks fantastic