Secret “Stash-Can” Safe

I remember as a child I always loved secret hiding places for things. I am not sure if that is normal or not and what it says about me but… I still love secret hiding spaces. And, to that end, I have designed a soda can (think cola or beer can) that is a secret safe. The top opens only when a secret sequence of actions is applied.

It is a hide-in-plain-sight kind of secret container camouflaged as a soda can. Obviously, it is not a great safe as someone can just walk away with it. But in terms of fun for those who want a hiding spot for something small, it is pretty good.

The sequence to open it can probably be guessed but to be fair the first adult I asked to try to open it failed. So fingers crossed it is not totally intuitive to everyone.

To open the “safe”…

  1. Press and hold down the drink opening area (1 in the diagram above). It only needs to go down about 1mm before you can proceed to the next step.
  2. Rotate the tab (2 in the diagram above) clockwise 90 degrees. Once it starts to turn you can release #1 above.
  3. Now, rotate the entire can top counter-clockwise 360 degrees to open the container (3 and 4 in the diagram above).

All the components of the design are shown in the image above and generally snap together or into the lid fairly easily. Please watch the video to see how to assemble it.

I also designed a plain lid that does not lock. It is just a screw-on lid. Simply an alternative. If you print that make sure to use a low infill like 10 or 20%.

Lastly, as noted in the video, I made a key that can open the “safe” in the event a friend comes over and pulls the tab out before opening the safe.


I have tried to make my main print settings visible on the Cura screenshot but in case they are difficult to read I have summarized them again here…

Material: I choose to use PETG for its durability and flexibility but I suspect you could make this out of PLA as well.

My Setup:
Nozzle = 0.4mm

My Settings:
Layer height = 0.2mm
Line width = 0.40mm
Wall count = 4 (1.6mm)
Infill = 40%

Designed to print without support except for the lid which has support designed in. So do not add support.

Print Orientation: As shown in the screenshot(s).

Where to Get My STL Files

I am now posting all of my new designs on and plan to continue to do so for the foreseeable future. Some of my older designs may not have been migrated over yet so if they are not available on please check on Thingiverse.

Use, Licensing, Comments and Feedback

My primary distribution site for my design files is is, in my opinion, leading the way in promoting designers and competition amongst designers which in turn fuels the growth of high-quality 3d printable designs for the benefit of our entire community. However, as a result, some of my designs are only available for free for 1 week from when first posted, so please download them when you see a new file available that you are interested in. Also, please like and save to help me with the competitions.

I do not permit the use of my designs for commercial purposes (i.e. you can not sell my design(s) or products printed from my design(s)) without first acquiring a commercial license from me. On I offer membership accounts for access to all my design files as well as a membership for commercial licensing which allows subscribers to sell printed products using my designs.

I welcome comments and feedback as we as requests for customization of designs. I will do my best to accommodate those requests.


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